Pseudo-Chrysostom — Commentary on Scripture

Matthew 6:10

These words, As in heaven so in earth, must be taken as common to all three preceding petitions. Observe also how carefully it is worded; He said not, Father, hallow Thy name in us, Let Thy kingdom come on us, Do Thy will in us. Nor again; Let us hallow Thy name, Let us enter into Thy kingdom, Let us do Thy will; that it should not seem to be either God's doing only, or man's doing only. But He used a middle form of speech, and the impersonal verb; for as man can do nothing good without God's aid, so neither does God work good in man unless man wills it.

(as quoted by Aquinas, AD 1274) Catena Aurea by Aquinas

Matthew 6:11

These words, As in heaven so in earth, must be taken as common to all three preceding petitions. Observe also how carefully it is worded; He said not, Father, hallow Thy name in us, Let Thy kingdom come on us, Do Thy will in us. Nor again; Let us hallow Thy name, Let us enter into Thy kingdom, Let us do Thy will; that it should not seem to be either God's doing only, or man's doing only. But He used a middle form of speech, and the impersonal verb; for as man can do nothing good without God's aid, so neither does God work good in man unless man wills it. PSEUDO-CHRYSOSTOM.d. Or by 'supersubstantialis' may be intended 'daily.' We pray, Give us this day our daily bread, not only that we may have what to eat, which is common to both righteous and sinners; but that what we eat we may receive at the hand of God, which belongs only to the saints. For to him God giveth bread who earns it by righteous means; but to him who earns it by sin, the Devil it is that gives. Or that inasmuch as it is given by God, it is received sanctified; and therefore He adds our, that is, such bread as we have…

These words, As in heaven so in earth, must be taken as common to all three preceding petitions. Observe also how carefully it is worded; He said not, Father, hallow Thy name in us, Let Thy kingdom come on us, Do Thy will in us. Nor again; Let us hallow Thy name, Let us enter into Thy kingdom, Let us do Thy will; that it should not seem to be either God's doing only, or man's doing only. But He used a middle form of speech, and the impersonal verb; for as man can do nothing good without God's aid, so neither does God work good in man unless man wills it.

PSEUDO-CHRYSOSTOM.d. Or by 'supersubstantialis' may be intended 'daily.'

We pray, Give us this day our daily bread, not only that we may have what to eat, which is common to both righteous and sinners; but that what we eat we may receive at the hand of God, which belongs only to the saints. For to him God giveth bread who earns it by righteous means; but to him who earns it by sin, the Devil it is that gives. Or that inasmuch as it is given by God, it is received sanctified; and therefore He adds our, that is, such bread as we have prepared for us, that do Thou give us, that by Thy giving it may be sanctified. Like as the Priest taking bread of the laic, sanctifies it, and then offers it to him; the bread indeed is his that brought it in offering, but that it is sanctified is the benefit from the Priest. He says Our for two reasons. First, because all things that God gives us He gives through us to others, that of what we receive of Him we may impart to the helpless. Whoso then of what he gains by his own toil bestows nothing on others, eats not his own bread only, but others' bread also. Secondly, he who eats bread got righteously, eats his own bread; but he who eats bread got with sin, eats others' bread.

And these words at first sight might seem to forbid our having it prepared for the morrow, or after the morrow. If this were so, this prayer could only suit a few; such as the Apostles who travelled hither and thither teaching—or perhaps none among us. Yet ought we so to adapt Christ's doctrine, that all men may profit in it.

Or; He adds, daily, that a man may eat so much only as natural reason requires, not as the lust of the flesh urges. For if you expend on one banquet as much as would suffice you for a hundred days, you are not eating to-day's provision, but that of many days.

(as quoted by Aquinas, AD 1274) Catena Aurea by Aquinas

Matthew 6:12

With what hope then does he pray, who cherishes hatred against another by whom he has been wronged? As he prays with a falsehood on his lips, when he says, I forgive, and does not forgive, so he asks indulgence of God, but no indulgence is granted him. There are many who, being unwilling to forgive those that trespass against them, will not use this prayer. How foolish! First, because he who does not pray in the manner Christ taught, is not Christ's disciple; and secondly, because the Father does not readily hear any prayer which the Son has not dictated; for the Father knows the intention and the words of the Son, nor will He entertain such petitions as human presumption has suggested, but only those which Christ's wisdom has set forth.

(as quoted by Aquinas, AD 1274) Catena Aurea by Aquinas

Matthew 6:13

As He had above put many high things into men's mouths, teaching them to call God their Father, to pray that His kingdom might come; so now He adds a lesson of humility, when He says, and lead us not into temptation.

This is also connected with the foregoing. Thine is the kingdom has reference to Thy kingdom come, that none should therefore say, God has no kingdom on earth. The power, answers to Thy will be done, as in earth so in heaven, that none should say thereon that God cannot perform whatever He would. And the glory, answers to all that follows, in which God's glory is shown forth.

(as quoted by Aquinas, AD 1274) Catena Aurea by Aquinas

Matthew 6:14-15

This is also connected with the foregoing. Thine is the kingdom has reference to Thy kingdom come, that none should therefore say, God has no kingdom on earth. The power, answers to Thy will be done, as in earth so in heaven, that none should say thereon that God cannot perform whatever He would. And the glory, answers to all that follows, in which God's glory is shown forth.

He does not say that God will first forgive us, and that we should after forgive our debtors. For God knows how treacherous the heart of man is, and that though they should have received forgiveness themselves, yet they do not forgive their debtors; therefore He instructs us first to forgive, and we shall be forgiven after.

(as quoted by Aquinas, AD 1274) Catena Aurea by Aquinas

Matthew 6:16

Forasmuch as that prayer which is offered in a humble spirit and contrite heart, shows a mind already strong and disciplined; whereas he who is sunk in self-indulgence cannot have a humble spirit and contrite heart; it is plain that without fasting prayer must be faint and feeble; therefore, when any would pray for any need in which they might be, they joined fasting with prayer, because it is an aid thereof. Accordingly the Lord, after His doctrine respecting prayer, adds doctrine concerning fasting, saying, When ye fast, be not ye as the hypocrites, of sad countenance. The Lord knew that vanity may spring from every good thing, and therefore bids us root out the bramble of vain-gloriousness which springs in the good soil, that it choke not the fruit of fasting. For though it cannot be that fasting should not be discovered in any one, yet is it better that fasting should show you, than that you should show your fasting. But it is impossible that any in fasting should be gay, therefore He said not, Be not sad, but Be not made sad; for they who discover themselves by any false display…

Forasmuch as that prayer which is offered in a humble spirit and contrite heart, shows a mind already strong and disciplined; whereas he who is sunk in self-indulgence cannot have a humble spirit and contrite heart; it is plain that without fasting prayer must be faint and feeble; therefore, when any would pray for any need in which they might be, they joined fasting with prayer, because it is an aid thereof. Accordingly the Lord, after His doctrine respecting prayer, adds doctrine concerning fasting, saying, When ye fast, be not ye as the hypocrites, of sad countenance. The Lord knew that vanity may spring from every good thing, and therefore bids us root out the bramble of vain-gloriousness which springs in the good soil, that it choke not the fruit of fasting. For though it cannot be that fasting should not be discovered in any one, yet is it better that fasting should show you, than that you should show your fasting. But it is impossible that any in fasting should be gay, therefore He said not, Be not sad, but Be not made sad; for they who discover themselves by any false displays of their affliction, they are not sad, but make themselves; but he who is naturally sad in consequence of continued fasting, does not make himself sad, but is so.

If then he who fasts, and makes himself of sad countenance, is a hypocrite, how much more wicked is he who does not fast, yet assumes a fictitious paleness of face as a token of fasting.

(as quoted by Aquinas, AD 1274) Catena Aurea by Aquinas

Matthew 6:17-18

Also if He bade us not to be of sad countenance that we might not seem to men to fast, yet if anointing of the head and washing of the face are always observed in fasting, they will become tokens of fasting. Therefore the simple interpretation of this is, that is added as an hyperbolical explanation of the command; as though He had said, Yea, so far should ye be from any display of your fasting, that if it might be (which yet it may not be) so done, ye should even do such things as are tokens of luxury and feasting. Spiritually interpreted—the face may be understood to mean the mental conscience. And as in the eyes of man a fair face has grace, so in the eyes of God a pure conscience has favour. This face the hypocrites, fasting on man's account, disfigure, seeking thereby to cheat both God and man; for the conscience of the sinner is always wounded. If then you have cast out all wickedness from your heart, you have washed your conscience, and fast well. Spiritually again, thy head denotes Christ. Give the thirsty drink and feed the hungry, and therein you have anointed your head…

Also if He bade us not to be of sad countenance that we might not seem to men to fast, yet if anointing of the head and washing of the face are always observed in fasting, they will become tokens of fasting.

Therefore the simple interpretation of this is, that is added as an hyperbolical explanation of the command; as though He had said, Yea, so far should ye be from any display of your fasting, that if it might be (which yet it may not be) so done, ye should even do such things as are tokens of luxury and feasting.

Spiritually interpreted—the face may be understood to mean the mental conscience. And as in the eyes of man a fair face has grace, so in the eyes of God a pure conscience has favour. This face the hypocrites, fasting on man's account, disfigure, seeking thereby to cheat both God and man; for the conscience of the sinner is always wounded. If then you have cast out all wickedness from your heart, you have washed your conscience, and fast well.

Spiritually again, thy head denotes Christ. Give the thirsty drink and feed the hungry, and therein you have anointed your head, that is, Christ, who cries out in the Gospel, In that ye have done this to one of the least of these my brethren, ye have done it to me. (Mat. 25:40.)

And truly we ought to wash our face, but to anoint, and not to wash, our head. For as long as we are in the body, our conscience is foul with sin. But Christ who is our head has done no sin.

(as quoted by Aquinas, AD 1274) Catena Aurea by Aquinas

Matthew 6:19-21

And truly we ought to wash our face, but to anoint, and not to wash, our head. For as long as we are in the body, our conscience is foul with sin. But Christ who is our head has done no sin. Otherwise; As the Lord had above taught nothing concerning alms, or prayer, or fasting, but had only checked a pretence of them, He now proceeds to deliver a doctrine of three portions, according to the division which He had before made, in this order. First, a counsel that alms should be done; second, to show the benefit of almsgiving; third, that the fear of poverty should be no hindrance to our purpose of almsgiving. Another reading is, Where moth and banqueting consume. For a threefold destruction awaits all the goods of this life. They either decay and are eaten of moths as cloth; or are consumed by their master's luxurious living; or are plundered by strangers, either by violence, or pilfering, or false accusation, or some other unjust doing. For all may be called thieves who hasten by any unlawful means to make other men's goods their own. But you will say, Do all who have these things…

And truly we ought to wash our face, but to anoint, and not to wash, our head. For as long as we are in the body, our conscience is foul with sin. But Christ who is our head has done no sin.

Otherwise; As the Lord had above taught nothing concerning alms, or prayer, or fasting, but had only checked a pretence of them, He now proceeds to deliver a doctrine of three portions, according to the division which He had before made, in this order. First, a counsel that alms should be done; second, to show the benefit of almsgiving; third, that the fear of poverty should be no hindrance to our purpose of almsgiving.

Another reading is, Where moth and banqueting consume. For a threefold destruction awaits all the goods of this life. They either decay and are eaten of moths as cloth; or are consumed by their master's luxurious living; or are plundered by strangers, either by violence, or pilfering, or false accusation, or some other unjust doing. For all may be called thieves who hasten by any unlawful means to make other men's goods their own. But you will say, Do all who have these things, perforce lose them? I would answer by the way, that if all do not, yet many do. But ill-hoarded wealth, you have lost spiritually if not actually, because it profits you not to your salvation.

Which then is better? To place it on earth where its security is doubtful, or in Heaven where it will be certainly preserved? What folly to leave it in this place whence you must soon depart, and not to send it before you thither, whither you are to go? Therefore place your substance there where your country is.

Otherwise; He now teaches the benefit of almsgiving. He who places his treasure on earth has nothing to look for in Heaven; for why should he look up to Heaven where he has nothing laid up for himself? Thus he doubly sins; first, because he gathers together things evil; secondly, because he has his heart in earth; and so on the contrary he does right in a twofold manner who lays up his treasure in Heaven.

(as quoted by Aquinas, AD 1274) Catena Aurea by Aquinas

Matthew 6:22-23

Otherwise; He now teaches the benefit of almsgiving. He who places his treasure on earth has nothing to look for in Heaven; for why should he look up to Heaven where he has nothing laid up for himself? Thus he doubly sins; first, because he gathers together things evil; secondly, because he has his heart in earth; and so on the contrary he does right in a twofold manner who lays up his treasure in Heaven.

It seems that He is not here speaking of the bodily eye, or of the outward body that is seen, or He would have said, If thine eye be sound, or weak; but He says, single, and, evil. But if one have a benign yet diseased eye, is his body therefore in light? Or if an evil yet a sound, is his body therefore in darkness?

(as quoted by Aquinas, AD 1274) Catena Aurea by Aquinas

Matthew 6:24

The Lord had said above, that he that has a spiritual mind is able to keep his body free from sin; and that he who has not, is not able. Of this He here gives the reason, saying, No man can serve two masters.

(as quoted by Aquinas, AD 1274) Catena Aurea by Aquinas

Matthew 6:25

Bread may not be gained by carefulness of spirit, but by toil of body; and to them that will labour it abounds, God bestowing it as a reward of their industry; and is lacking to the idle, God withdrawing it as punishment of their sloth. The Lord also confirms our hope, and descending first from the greater to the less, says, Is not the life more than meat, and the body than raiment?

For had He not willed that that which was should be preserved, He had not created it; but what He so created that it should be preserved by food, it is necessary that He give it food, as long as He would have it to be preserved.

(as quoted by Aquinas, AD 1274) Catena Aurea by Aquinas

Matthew 6:26-27

Having confirmed our hope by this arguing from the greater to the less, He next confirms it by an argument from less to greater, Behold the fowls of the air, they sow not, neither do they reap.

For God created all animals for man, but man for himself; therefore by how much the more precious is the creation of man, so much the greater is God's care for him. If then the birds without toiling find food, shall man not find, to whom God has given both knowledge of labour and hope of fruitfulness?

For it is God who day by day works the growth of your body, yourself not feeling it. If then the Providence of God works thus daily in your very body, how shall that same Providence withhold from working in necessaries of life? And if by taking thought you cannot add the smallest part to your body, how shall you by taking thought be altogether saved?

(as quoted by Aquinas, AD 1274) Catena Aurea by Aquinas

Matthew 6:28-30

For lilies within a fixed time are formed into branches, clothed in whiteness, and endowed with sweet odour, God conveying by an unseen operation, what the earth had not given to the root. But in all the same perfectness is observed, that they may not be thought to have been formed by chance, but may be known to be ordered by God's providence. When He says, They toil not, He speaks for the comfort of men; Neither do they spin, for the women.

Or the meaning may be, that Solomon though he toiled not for his own raiment, yet he gave command for the making of it. But where command is, there is often found both offence of them that minister, and wrath of him that commands. When then any are without these things, then they are arrayed as are the lilies.

If God then thus provides for the flowers of the earth which only spring up, that they may be seen and die, shall He overlook men whom He has created not to be seen for a time, but that they should be for ever?

(as quoted by Aquinas, AD 1274) Catena Aurea by Aquinas

Matthew 6:31-33

Since their belief is that it is Fortune and not Providence that has place in human affairs, and think not that their lives are directed by God's counsel, but follow the uncertain chance, they accordingly fear and despair, as having none to guide them. But he who believes that he is guided by God's counsel, entrusts his provision of food to God's hand; as it follows, for your Father knoweth that ye have need of these things. Thus then let him who believes himself to be under the rule of God's counsel, commit his provision into God's hand; but let him meditate of good and evil, which if he do not, he will neither shun the evil, nor lay hold of the good. Therefore it is added, Seek ye first the kingdom of God, and his righteousness. The kingdom of God is the reward of good works; His righteousness is the way of piety by which we go to that kingdom. If then you consider how great is the glory of the Saints, you will either through fear of punishment depart from evil, or through desire of glory hasten to good. And if you consider what is the righteousness of God, what He loves, and what…

Since their belief is that it is Fortune and not Providence that has place in human affairs, and think not that their lives are directed by God's counsel, but follow the uncertain chance, they accordingly fear and despair, as having none to guide them. But he who believes that he is guided by God's counsel, entrusts his provision of food to God's hand; as it follows, for your Father knoweth that ye have need of these things.

Thus then let him who believes himself to be under the rule of God's counsel, commit his provision into God's hand; but let him meditate of good and evil, which if he do not, he will neither shun the evil, nor lay hold of the good. Therefore it is added, Seek ye first the kingdom of God, and his righteousness. The kingdom of God is the reward of good works; His righteousness is the way of piety by which we go to that kingdom. If then you consider how great is the glory of the Saints, you will either through fear of punishment depart from evil, or through desire of glory hasten to good. And if you consider what is the righteousness of God, what He loves, and what He hates, the righteousness itself will show you His ways, as it attends on those that love it. And the account we shall have to render is not whether we have been poor or rich, but whether we have done well or ill, which is in our own power.

The earth for man's sin is accursed that it should not put forth fruit, according to that in Genesis, Cursed is the ground in thy works; but when we do well, then it is blessed. (Gen. 3:17.) Seek righteousness therefore, and thou shalt not lack food. Wherefore it follows, and all these things shall be added unto you.

(as quoted by Aquinas, AD 1274) Catena Aurea by Aquinas

Matthew 6:34

Otherwise; By to-day are signified such things as are needful for us in this present life; To-morrow denotes those things that are superfluous. Be not ye therefore anxious for the morrow, thus means, Seek not to have aught beyond that which is necessary for your daily life, for that which is over and above, i. e. To-morrow, shall care for itself. To-morrow shall he anxious for itself, is as much as to say, when you have heaped up superfluities, they shall care for themselves, you shall not enjoy them, but they shall find many lords who shall care for them. Why then should you be anxious about those things, the property of which you must part with? Sufficient for the day is its own evil, as much as to say, The toil you undergo for necessaries is enough, do not toil for things superfluous.

(as quoted by Aquinas, AD 1274) Catena Aurea by Aquinas

Matthew 7:1-2

Otherwise; He has drawn out thus far the consequences of his injunctions of almsgiving; He now takes up those respecting prayer. And this doctrine is in a sort a continuation of that of the prayer; as though it should run, Forgive us our debts, and then should follow, Judge not, that ye be not judged. But some explain this place after a sense, as though the Lord did not herein forbid Christians to reprove others out of good will, but only intended that Christians should not despise Christians by making a show of their own righteousness, hating others often on suspicion alone, condemning them, and pursuing private grudges under the show of piety. But that not even thus should Christians correct Christians is shown by that expression, Judge not. But if they do not thus correct, shall they therefore obtain forgiveness of their sins, because it is said, and ye shall not be judged? For who obtains forgiveness of a former sin, by not adding another thereto? This we have said, desiring to show that this is not here spoken concerning not judging our neighbour who shall sin against God, but…

Otherwise; He has drawn out thus far the consequences of his injunctions of almsgiving; He now takes up those respecting prayer. And this doctrine is in a sort a continuation of that of the prayer; as though it should run, Forgive us our debts, and then should follow, Judge not, that ye be not judged.

But some explain this place after a sense, as though the Lord did not herein forbid Christians to reprove others out of good will, but only intended that Christians should not despise Christians by making a show of their own righteousness, hating others often on suspicion alone, condemning them, and pursuing private grudges under the show of piety.

But that not even thus should Christians correct Christians is shown by that expression, Judge not. But if they do not thus correct, shall they therefore obtain forgiveness of their sins, because it is said, and ye shall not be judged? For who obtains forgiveness of a former sin, by not adding another thereto? This we have said, desiring to show that this is not here spoken concerning not judging our neighbour who shall sin against God, but who may sin against ourselves. For whoso does not judge his neighbour who has sinned against him, him shall not God judge for his sin, but will forgive him his debt even as he forgave.

(as quoted by Aquinas, AD 1274) Catena Aurea by Aquinas

Matthew 7:3-5

Otherwise; This is spoken to the doctors. For every sin is either a great or a small sin according to the character of the sinner. If he is a laie, it is small and a mote in comparison of the sin of a priest, which is the beam.

That is, with what face can you charge your brother with sin, when yourself are living in the same or a yet greater sin?

Otherwise; How sayest thou to thy brother; that is, with what purpose? From charity, that you may save your neighbour? Surely not, for you would first save yourself. You desire therefore not to heal others, but by good doctrine to cover bad life, and to gain praise of learning from men, not the reward of edifying from God, and you are a hypocrite; as it follows, Thou hypocrite, cast first the beam out of thine own eye.

(as quoted by Aquinas, AD 1274) Catena Aurea by Aquinas

Matthew 7:6

Otherwise; The Lord had commanded us to love our enemies, and to do good to those that sin against us. That from this Priests might not think themselves obliged to communicate also the things of God to such, He checked any such thought saying, Give not that which is holy to the dogs; as much as to say, I have bid you love your enemies, and do them good out of your temporal goods, but not out of My spiritual goods, without distinction. For they are your brethren by nature but not by faith, and God gives the good things of this life equally to the worthy and the unworthy, but not so spiritual graces. Otherwise; That which is holy denotes baptism, the grace of Christ's body, and the like; but the mysteries of the truth are intended by the pearls. For as pearls are inclosed in shells, and such in the deeps of the sea, so the divine mysteries inclosed in words are lodged in the deep meaning of Holy Scripture. Otherwise; The dog and the swine are unclean animals; the dog indeed in every respect, as he neither chews the cud, nor divides the hoof; but swine in one respect only, seeing they…

Otherwise; The Lord had commanded us to love our enemies, and to do good to those that sin against us. That from this Priests might not think themselves obliged to communicate also the things of God to such, He checked any such thought saying, Give not that which is holy to the dogs; as much as to say, I have bid you love your enemies, and do them good out of your temporal goods, but not out of My spiritual goods, without distinction. For they are your brethren by nature but not by faith, and God gives the good things of this life equally to the worthy and the unworthy, but not so spiritual graces.

Otherwise; That which is holy denotes baptism, the grace of Christ's body, and the like; but the mysteries of the truth are intended by the pearls. For as pearls are inclosed in shells, and such in the deeps of the sea, so the divine mysteries inclosed in words are lodged in the deep meaning of Holy Scripture.

Otherwise; The dog and the swine are unclean animals; the dog indeed in every respect, as he neither chews the cud, nor divides the hoof; but swine in one respect only, seeing they divide the hoof, though they do not chew the cud. Hence I think that we are to understand by the dog, the Gentiles who are altogether unclean, both in their life, and in their faith; but by the swine are to be understood heretics, because they seem to call upon the name of the Lord. Give not therefore that which is holy to the dogs, for that baptism and the other sacraments are not to be given but to them that have the faith. In like manner the mysteries of the truth, that is, the pearls, are not to be given but to such as desire the truth and live with human reason. If then you cast them to the swine, that is, to such as are grovelling in impurity of life, they do not understand their preciousness, but value them like to other worldly fables, and tread them under foot with their carnal life.

Or; The swine not only trample upon the pearls by their carnal life, but after a little they turn, and by disobedience rend those who offend them. Yea often when offended they bring false accusation against them as sowers of new dogmas. The dogs also having trode upon holy things by their impure actions, by their disputings rend the preacher of truth.

With good reason He forbade pearls to be given to swine. For if they are not to be set before swine that are the less unclean, how much more are they to be withheld from dogs that are so much more unclean. But respecting the giving that which is holy, we cannot hold the same opinion; seeing we often give the benediction to Christians who live as the brutes; and that not because they deserve to receive it, but lest perchance being more grievously offended they should perish utterly.

(as quoted by Aquinas, AD 1274) Catena Aurea by Aquinas

Matthew 7:7-8

Otherwise; Having given them some commands for the sanctification of prayer, saying, Judge not, He adds accordingly, Ask, and it shall be given unto you, as though He were to say, If ye observe this mercy towards your enemies, whatever seems to you shut, knock, and it shall be opened to you. Ask therefore in prayer, praying day and night; seek with care and toil; for neither by toiling only in the Scriptures do we gain knowledge without God's grace, nor do we attain to grace without study, lest the gift of God should be bestowed on the careless. But knock with prayer, and fasting, and alms. For as one who knocks at a door, not only cries out with his voice, but strikes with his hand, so he who does good works, knocks with his works. But you will say, this is what I pray that I may know and do, how then can I do it, before I receive? Do what you can that you may become able to do more, and keep what you know that you may come to know more. Or otherwise; having above commanded all men to love their enemies, and after enjoined that we should not under pretext of love give holy things to…

Otherwise; Having given them some commands for the sanctification of prayer, saying, Judge not, He adds accordingly, Ask, and it shall be given unto you, as though He were to say, If ye observe this mercy towards your enemies, whatever seems to you shut, knock, and it shall be opened to you. Ask therefore in prayer, praying day and night; seek with care and toil; for neither by toiling only in the Scriptures do we gain knowledge without God's grace, nor do we attain to grace without study, lest the gift of God should be bestowed on the careless. But knock with prayer, and fasting, and alms. For as one who knocks at a door, not only cries out with his voice, but strikes with his hand, so he who does good works, knocks with his works. But you will say, this is what I pray that I may know and do, how then can I do it, before I receive? Do what you can that you may become able to do more, and keep what you know that you may come to know more. Or otherwise; having above commanded all men to love their enemies, and after enjoined that we should not under pretext of love give holy things to dogs; He here gives good counsel, that they should pray God for them, and it shall be granted them; let them seek out those that are lost in sins, and they shall find them; let them knock at those who are shut up in errors, and God shall open to them that their word may have access to their souls. Or otherwise; Since the precepts given above were beyond the reach of human virtue, He sends them to God to whose grace nothing is impossible, saying, Ask, and it shall be given you, that what cannot be performed by men may be fulfilled through the grace of God. For when God furnished the other animals with swift foot, or swift wing, with claws, teeth, or horns, He so made man that He Himself should be man's only1 strength, that forced by reason of his own weakness, he might always have need of his Lord.

He had said, Ask, and ye shall receive; which sinners hearing might perchance say, The Lord herein exhorts them that are worthy, but we are unworthy. Therefore He repeats it that He may commend the mercy of God to the righteous as well as to sinners; and therefore declares that every one that asketh receiveth; that is, whether he be righteous or a sinner, let him not hesitate to ask; that it may be fully seen that none is neglected but he who hesitates to ask of God. For it is not credible that God should enjoin on men that work of piety which is displayed in doing good to our enemies, and should not Himself (being good) act so.

(as quoted by Aquinas, AD 1274) Catena Aurea by Aquinas

Matthew 7:9-11

Lest perchance any one considering how great is the difference between God and man, and weighing his own sins should despair of obtaining, and so never take in hand to ask; therefore He proposes a comparison of the relation between father and son; that should we despair because of our sins, we may hope because of God's fatherly goodness.

And what are the things that we ought to ask, he shows under the likeness of a loaf, and a fish. The loaf is the word concerning the knowledge of God the Father. The stone is all falsehood that has a stumbling-block of offence to the soul.

Because in comparison of God who is preeminently good, all men seem to be evil, as all light shows dark when compared with the sun.

He says good things, because God does not give all things to them that ask Him, but only good things.

(as quoted by Aquinas, AD 1274) Catena Aurea by Aquinas