John Cassian — Commentary on Scripture

Isaiah 14:13-14

For thou hast said in thine heart, I will ascend into heaven, I will exalt my throne above the stars of God: I will sit also upon the mount of the congregation, in the sides of the north:

The one says, “I will exalt my throne above the stars of God”; the other, “Learn of me, for I am meek and lowly of heart.” The one says, “I know not the Lord and will not let Israel go”; the other, “If I say that I know him not, I shall be a liar like unto you: but I know him and keep his commandments.” The one says, “My rivers are mine, and I made them”; the other, “I can do nothing of myself, but my Father who abides in me, he does the works.” The one says, “All the kingdoms of the world and the glory of them are mine, and to whomsoever I will, I give them”; the other, “Though he were rich, yet he became poor, that we through his poverty might be made rich.” The one says, “As eggs are gathered together which are left, so have I gathered all the earth, and there was none that moved the wing or opened the mouth, or made the least noise”; the other, “I am become like a solitary pelican; I watched and became as a sparrow alone upon the roof.” The one says, “I have dried up with the sole of my foot all the rivers shut up in banks”; the other, “Cannot I ask my Father, and he shall presen…

The one says, “I will exalt my throne above the stars of God”; the other, “Learn of me, for I am meek and lowly of heart.” The one says, “I know not the Lord and will not let Israel go”; the other, “If I say that I know him not, I shall be a liar like unto you: but I know him and keep his commandments.” The one says, “My rivers are mine, and I made them”; the other, “I can do nothing of myself, but my Father who abides in me, he does the works.” The one says, “All the kingdoms of the world and the glory of them are mine, and to whomsoever I will, I give them”; the other, “Though he were rich, yet he became poor, that we through his poverty might be made rich.” The one says, “As eggs are gathered together which are left, so have I gathered all the earth, and there was none that moved the wing or opened the mouth, or made the least noise”; the other, “I am become like a solitary pelican; I watched and became as a sparrow alone upon the roof.” The one says, “I have dried up with the sole of my foot all the rivers shut up in banks”; the other, “Cannot I ask my Father, and he shall presently give me more than twelve legions of angels?” If we look at the reason of our original fall and the foundations of our salvation, and [if we] consider by whom and in what way the latter were laid and the former originated, we may learn, either through the fall of the devil or through the example of Christ, how to avoid so terrible a death from pride.

Isaiah 30:18

And therefore will the LORD wait, that he may be gracious unto you, and therefore will he be exalted, that he may have mercy upon you: for the LORD is a God of judgment: blessed are all they that wait for him.

For he calls and invites us, when he says, “All the day long I stretched forth my hands to a disobedient and gainsaying people”; and he is invited by us when we say to him, “All the day long I have stretched forth my hands unto you.” He waits for us, when it is said by the prophet, “Therefore the Lord waits to have compassion upon us”; and he is waited for by us, when we say, “I waited patiently for the Lord, and he inclined to me,” and “I have waited for your salvation, O Lord.”

Isaiah 30:19 · 2 passages

For the people shall dwell in Zion at Jerusalem: thou shalt weep no more: he will be very gracious unto thee at the voice of thy cry; when he shall hear it, he will answer thee.

These two then, namely, the grace of God and free will, seem opposed to each other but really are in harmony. And we gather from the system of goodness that we ought to have both alike, lest if we withdraw one of them from man, we may seem to have broken the rule of the church’s faith. For when God sees us inclined to will what is good, he meets, guides and strengthens us. For “at the voice of your cry, as soon as he shall hear, he will answer you”; and “Call upon me,” he said, “in the day of tribulation, and I will deliver you, and you shall glorify me.” And again, if he finds that we are unwilling or have grown cold, he stirs our hearts with salutary exhortations, by which a good will is either renewed or formed in us.

The divine protection, then, is always inseparably present to us, and so great is the love of the Creator for his creature that his providence not only stands by it but even goes constantly before it. The prophet, who has experienced this, confesses it very clearly when he says, “My God will go before me with his mercy.” When he notices good will making an appearance in us, at once he enlightens and encourages it and spurs it on to salvation, giving increase to what he himself planted and saw arise from our own efforts. For, he says, “before they cry, I will hear them. I will hear them when they are still speaking.” And again: “As soon as he hears the voice of your cry, he will respond to you.” Not only does he graciously inspire holy desires, but also he arranges favorable moments in one’s life and the possibility of good results, and he shows the way of salvation to those who are straying.

Isaiah 30:20

And though the Lord give you the bread of adversity, and the water of affliction, yet shall not thy teachers be removed into a corner any more, but thine eyes shall see thy teachers:

“Let waters from your own fountain flow in abundance for you, but let your waters pass through into your streets.” And according to the prophet Isaiah, “You shall be like a watered garden and like a fountain of water whose waters shall not fail. And the places that have been desolate for ages shall be built in you; you shall raise up the foundations of generation and generation; and you shall be called the repairer of the fences, turning the paths into rest.” And that blessedness shall come upon you which the same prophet promises: “And the Lord will not cause your teacher to flee away from you any more, and your eyes shall see your teacher. And your ears shall hear the word of one admonishing you behind your back. This is the way, walk in it, and go not aside either to the right hand or to the left.” And so it will come to pass that not only every purpose and thought of our heart but also all the wanderings and rovings of your imagination will become to you a holy and unceasing pondering of the divine law.

Isaiah 30:21

And thine ears shall hear a word behind thee, saying, This is the way, walk ye in it, when ye turn to the right hand, and when ye turn to the left.

If, then, such matters are carefully received, if they are hidden and consigned within the quiet places of the mind, if they are marked in silence, they will later be like a wine of sweet aroma bringing gladness to the human heart. Matured by long reflection and by patience, they will be poured out as a great fragrance from the vessel of your heart. Like some everlasting spring they will flow out from the channels of experience and from the flowing waters of virtue. They will come bounding forth, running, unceasing, from, as it were, the abyss of your heart.… And, as the prophet Isaiah declares, “You will be like a well-watered garden, like a flowing spring whose waters will never fail. And places emptied for ages will be built up in you. You will lift up the foundations laid by generation after generation. You will be called the builder of fences, the one who turns the pathways toward peace.” That blessing promised by the prophet will come to you: “And the Lord will not cause your teacher to fly far away from you, and your eyes will look upon your guide. And your ears shall hear the…

If, then, such matters are carefully received, if they are hidden and consigned within the quiet places of the mind, if they are marked in silence, they will later be like a wine of sweet aroma bringing gladness to the human heart. Matured by long reflection and by patience, they will be poured out as a great fragrance from the vessel of your heart. Like some everlasting spring they will flow out from the channels of experience and from the flowing waters of virtue. They will come bounding forth, running, unceasing, from, as it were, the abyss of your heart.… And, as the prophet Isaiah declares, “You will be like a well-watered garden, like a flowing spring whose waters will never fail. And places emptied for ages will be built up in you. You will lift up the foundations laid by generation after generation. You will be called the builder of fences, the one who turns the pathways toward peace.” That blessing promised by the prophet will come to you: “And the Lord will not cause your teacher to fly far away from you, and your eyes will look upon your guide. And your ears shall hear the word of warning from behind, ‘This is the path. Walk along it and turn neither to the right nor to the left.’ ”

Isaiah 30:23

Then shall he give the rain of thy seed, that thou shalt sow the ground withal; and bread of the increase of the earth, and it shall be fat and plenteous: in that day shall thy cattle feed in large pastures.

For “in a good heart wisdom will rest,” and “he that fears the Lord shall find knowledge with righteousness.” But that we must attain to spiritual knowledge in the order of which we have already spoken, we are taught also by the blessed apostle. For when he wanted not merely to draw up a list of all his own virtues but rather to describe their order, that he might explain which follows what, and which gives birth to what, after some others he proceeds as follows: “In watchings, in fastings, in chastity, in knowledge, in long suffering, in gentleness, in the Holy Spirit, in love unfeigned.” And by this enumeration of virtues he evidently meant to teach us that we must come from watchings and fastings to chastity, from chastity to knowledge, from knowledge to long suffering, from long suffering to gentleness, from gentleness to the Holy Spirit, from the Holy Spirit to the rewards of love unfeigned. When then by this system and in this order you too have come to spiritual knowledge, you will certainly have, as we said, not barren or idle learning but what is vigorous and fruitful. And t…

For “in a good heart wisdom will rest,” and “he that fears the Lord shall find knowledge with righteousness.” But that we must attain to spiritual knowledge in the order of which we have already spoken, we are taught also by the blessed apostle. For when he wanted not merely to draw up a list of all his own virtues but rather to describe their order, that he might explain which follows what, and which gives birth to what, after some others he proceeds as follows: “In watchings, in fastings, in chastity, in knowledge, in long suffering, in gentleness, in the Holy Spirit, in love unfeigned.” And by this enumeration of virtues he evidently meant to teach us that we must come from watchings and fastings to chastity, from chastity to knowledge, from knowledge to long suffering, from long suffering to gentleness, from gentleness to the Holy Spirit, from the Holy Spirit to the rewards of love unfeigned. When then by this system and in this order you too have come to spiritual knowledge, you will certainly have, as we said, not barren or idle learning but what is vigorous and fruitful. And the seed of the word of salvation that has been committed by you to the hearts of your hearers will be watered by the plentiful showers of the Holy Spirit that will follow. And according to this the prophet promised, “The rain will be given to your seed, wherever you shall sow in the land, and the bread of the corn of the land shall be most plentiful and fat.”

Isaiah 30:26

Moreover the light of the moon shall be as the light of the sun, and the light of the sun shall be sevenfold, as the light of seven days, in the day that the LORD bindeth up the breach of his people, and healeth the stroke of their wound.

Does not Scripture say universally of all the things that were created by God, “Behold, everything that God made was very good”? … The things that belong to the present, then, are not declared good in a merely minimal sense but are emphatically “very good.” For, in fact, they are useful for us while we are living in this world, whether to sustain life or as medicine for the body or on account of some benefit unknown to us. Or else they are very good in that they let us “see the invisible things of God, his eternal power and his divinity, from the creation of the world, through things that have been made graspable”23—that is, from the great and well-ordered construction and arrangement of the world—and let us contemplate them from the existence of everything that is in it. Yet all of these will be unable to maintain their title to goodness if they are compared with the future age, where no mutability in good things and no corruption of true blessedness is to be feared. The blessedness of this world is described as follows: “The light of the moon shall be as the light of the sun, and t…

Does not Scripture say universally of all the things that were created by God, “Behold, everything that God made was very good”? … The things that belong to the present, then, are not declared good in a merely minimal sense but are emphatically “very good.” For, in fact, they are useful for us while we are living in this world, whether to sustain life or as medicine for the body or on account of some benefit unknown to us. Or else they are very good in that they let us “see the invisible things of God, his eternal power and his divinity, from the creation of the world, through things that have been made graspable”23—that is, from the great and well-ordered construction and arrangement of the world—and let us contemplate them from the existence of everything that is in it. Yet all of these will be unable to maintain their title to goodness if they are compared with the future age, where no mutability in good things and no corruption of true blessedness is to be feared. The blessedness of this world is described as follows: “The light of the moon shall be as the light of the sun, and the light of the sun shall be sevenfold, as the light of seven days.” The things that are great, then, and splendid and marvelous to behold will immediately seem empty if they are compared with the future promises in faith.

Isaiah 33:6

And wisdom and knowledge shall be the stability of thy times, and strength of salvation: the fear of the LORD is his treasure.

It must follow that any one solidly established in the perfection of this love will rise to that more excellent and more sublime stage that is the fear derived from love. This is not a terror in the face of punishment or a desire for reward. Rather it is something that comes from the very greatness of love. It is the mixture of respect and affection that a son has for a very indulgent father, a brother for a brother, a friend for a friend, a wife for a husband. This is the fear whose splendor has been elegantly described by one of the prophets. “Wisdom and knowledge are the riches of salvation, but its treasure is the fear of the Lord.” He could not have more clearly described the dignity and the merit of this fear when he said that the riches of our salvation, namely, true wisdom and the knowledge of God, cannot be preserved except by the fear of the Lord. This is the fear to which saints, and not sinners, are invited by the prophetic oracles.… Someone holding to this fear of the Lord is certain to lack no perfection.

Isaiah 35:10 · 2 passages

And the ransomed of the LORD shall return, and come to Zion with songs and everlasting joy upon their heads: they shall obtain joy and gladness, and sorrow and sighing shall flee away.

And in fact, if we look with the elevated gaze of our mind at the condition wherein the heavenly and supernal virtues that are truly in the kingdom of God make their home, what else should it be thought to be than perpetual and continual joy? For what belongs so much to true blessedness and so befits it as continual tranquility and everlasting joy?… “They shall receive joy and gladness; sorrow and groaning shall flee away.”

For by these tokens the kingdom of God and the kingdom of the devil are distinguished: and in truth if lifting up our mental gaze on high we would consider that state in which the heavenly powers live on high, who are truly in the kingdom of God, what should we imagine it to be except perpetual and lasting joy? For what is so specially peculiar and appropriate to true blessedness as constant calm and eternal joy? And that you may be quite sure that this, which we say, is really so, not on my own authority but on that of the Lord, hear how very clearly he describes the character and condition of that world. “Behold,” he says, “I create new heavens and a new earth; and the former things shall not be remembered nor come into mind. But you shall be glad and rejoice forever in that which I create.” And again “joy and gladness shall be found therein: thanksgiving and the voice of praise, and there shall be month after month, and sabbath after sabbath.” And again: “They shall obtain joy and gladness; and sorrow and sighing shall flee away.” And if you want to know more definitely about that…

For by these tokens the kingdom of God and the kingdom of the devil are distinguished: and in truth if lifting up our mental gaze on high we would consider that state in which the heavenly powers live on high, who are truly in the kingdom of God, what should we imagine it to be except perpetual and lasting joy? For what is so specially peculiar and appropriate to true blessedness as constant calm and eternal joy? And that you may be quite sure that this, which we say, is really so, not on my own authority but on that of the Lord, hear how very clearly he describes the character and condition of that world. “Behold,” he says, “I create new heavens and a new earth; and the former things shall not be remembered nor come into mind. But you shall be glad and rejoice forever in that which I create.” And again “joy and gladness shall be found therein: thanksgiving and the voice of praise, and there shall be month after month, and sabbath after sabbath.” And again: “They shall obtain joy and gladness; and sorrow and sighing shall flee away.” And if you want to know more definitely about that life and the city of the saints, hear what the voice of the Lord proclaims to the heavenly Jerusalem: “I will make,” he says, “your officers peace and your overseers righteousness. Violence shall no more be heard in your land, desolation nor destruction within your borders. And salvation shall take possession of your walls, and praise of your gates.”

Isaiah 40:4

Every valley shall be exalted, and every mountain and hill shall be made low: and the crooked shall be made straight, and the rough places plain:

According to the plain teaching of the Lord, the king’s highway is easy and smooth, though it may be felt as hard and rough. For those who piously and faithfully serve him, when they have taken on them the yoke of the Lord and have learned of him, that he is meek and lowly of heart, at once [they] somehow or other lay aside the burden of earthly passions and find no labor but rest for their souls, by the gift of the Lord. [To this] he himself testifies by Jeremiah the prophet, saying, “Stand on the ways and see, and ask for the old paths, which is the good way, and walk in it: and you shall find refreshment for your souls.” For to them at once “the crooked shall become straight and the rough ways plain”; and they shall “taste and see that the Lord is gracious.” And when they hear Christ proclaiming in the Gospel, “Come unto me, all you that labor and are heavy laden, and I will refresh you,” they will lay aside the burden of their sins and realize what follows: “For my yoke is easy, and my burden is light.” The way of the Lord then has refreshment if it is kept according to his law.

Isaiah 42:18

Hear, ye deaf; and look, ye blind, that ye may see.

“Who is deaf but my servant?” And who is blind, but the one to whom I have sent my messengers?” And so that no one might ascribe their blindness to their nature instead of to their own will, he says elsewhere: “Bring forth the people that are blind and have eyes, that are deaf and have ears.” And again he says, “You have eyes, but do not see, ears but do not hear.”

Isaiah 43:25 · 2 passages

I, even I, am he that blotteth out thy transgressions for mine own sake, and will not remember thy sins.

“Forgive us our trespasses as we forgive those who trespass against us.” Whoever, therefore, desires to obtain the forgiveness of sins should strive to use these methods. The obstinacy of a hardened heart should turn no one away from a salutary healing and from the source of so great mercy, for even if we did all these things they would not be ineffective for the expiation of our crimes unless the goodness and mercy of the Lord destroyed them. When he has seen the services of a devout effort rendered by us with a humble mind, he supplements these feeble and small efforts with his own measureless generosity, as he says: “I am the one who destroys your iniquities for my own sake, and I will not keep record of your sins.” - "Conference 20.8.8-9"

“Forgive us our debts as we also forgive our debtors.” Whoever then desires to obtain forgiveness of sins, should strive to use these means. Let not the stubbornness of an obdurate heart turn away any from the saving remedy and the source of so much goodness, because even if we have done all these things, they will not be able to expiate our offences, unless they are blotted out by the goodness and mercy of the Lord, who when he sees us engaged in pious efforts with a humble heart, supports our small and puny efforts with the utmost bounty, and says: “I even I am the one that blots out your iniquities for my own sake, and I will remember your sins no more.”

Isaiah 45:3

And I will give thee the treasures of darkness, and hidden riches of secret places, that thou mayest know that I, the LORD, which call thee by thy name, am the God of Israel.

Then the word of God will precede us and first humble the powerful of our earth—that is, these same harmful passions that we wish to subdue and that claim dominion for themselves and a most cruel tyranny in our mortal body—and it will make them submit to our investigation and our exposure. And, breaking open the gates of ignorance and smashing the bolts of the vices that shut us out from true knowledge, it will lead us to our concealed secrets and, according to the apostle, it will, once we have been enlightened, reveal to us “the hidden things of darkness and make manifest the counsels of hearts.”

Isaiah 46:10

Declaring the end from the beginning, and from ancient times the things that are not yet done, saying, My counsel shall stand, and I will do all my pleasure:

“Your will be done on earth as it is in heaven.” There cannot be a greater prayer than to desire that earthly things should deserve to equal heavenly ones. For what does it mean to say “your will be done on earth as it is in heaven,” if not that human beings should be like angels and that, just as God’s will is fulfilled by them in heaven, so also all those who are on earth should do not their own but his will? No one will really be able to say this but one who believes that God regulates all things that are seen, whether fortunate or unfortunate, for the sake of our well-being, and that he is more provident and careful with regard to the salvation and interests of those who are his own than we are for ourselves. And of course it is to be understood in this way—namely, that the will of God is the salvation of all, according to the text of blessed Paul: “Who desires all to be saved and to come to the knowledge of truth.” Of this will the prophet Isaiah, speaking in the person of God the Father, also says, “All my will shall be done.”

Isaiah 49:15 · 2 passages

Can a woman forget her sucking child, that she should not have compassion on the son of her womb? yea, they may forget, yet will I not forget thee.

This design and love of his, which the Lord deigns with unwearying kindness to benefit us with and which he wishes to express by an act of human affection, although he discovers no such loving disposition in his creation to which he could worthily compare it, he has compared with the most tender heart of a loving mother. He uses this example because he can find nothing dearer in the nature of human beings. - "Conference 13.17.4"

This providence and love of God therefore, which the Lord in unwearied goodness deigns to show us, he compares to the tender heart of a kind mother. He does so because he wishes to express that love by a figure of human affection, and he finds in his creatures no such feeling of love to which he could better compare it. And he uses this example, because nothing dearer can be found in human nature.

Isaiah 52:3

For thus saith the LORD, Ye have sold yourselves for nought; and ye shall be redeemed without money.

For without a doubt he will not deserve to be adorned with the garment of incorruption (concerning which the apostle commanded, “Put on the Lord Jesus Christ”; and again: “Clothed in the breastplate of righteousness and love”;11 and about which the Lord himself said to Jerusalem through the prophet: “Rise up, rise up, Jerusalem, put on the garments of your glory”) who has been overcome by slumbering idleness and boredom and who has chosen to be clothed not by the effort of his own toil but in the rags of laziness, which he has cut off from the complete fullness of the Scriptures and from their body and which he refits into a disgraceful covering to hide his slothfulness rather than into a garment of glory and beauty.