John Cassian — Commentary on Scripture

Isaiah 55:8

God brings salvation to the human race in diverse and innumerable methods and inscrutable ways. He stirs up some, who already want it and thirst for it, to greater zeal, while other even in their resistance, he forces against their will. Sometimes he gives his assistance in the fulfillment of those things which he sees that we desire for our good, while at other times he instills in us the beginnings of holy desire and grants both the beginning of a good work and perseverance in it.… The blessed apostle, reflecting on the manifold bounty of God’s providence as he sees that he has fallen into some vast and boundless ocean of God’s goodness, exclaims: “O the depth of the riches of the wisdom and knowledge of God! How inscrutable are the judgments of God and his ways past finding out! For who hath known the mind of the Lord?” Whoever then imagines that he can by human reason fathom the depths of that inconceivable abyss, will be trying to explain away the astonishment at that knowledge, at which that great and mighty teacher of the gentiles was awed. For if a person thinks that he can e…

God brings salvation to the human race in diverse and innumerable methods and inscrutable ways. He stirs up some, who already want it and thirst for it, to greater zeal, while other even in their resistance, he forces against their will. Sometimes he gives his assistance in the fulfillment of those things which he sees that we desire for our good, while at other times he instills in us the beginnings of holy desire and grants both the beginning of a good work and perseverance in it.… The blessed apostle, reflecting on the manifold bounty of God’s providence as he sees that he has fallen into some vast and boundless ocean of God’s goodness, exclaims: “O the depth of the riches of the wisdom and knowledge of God! How inscrutable are the judgments of God and his ways past finding out! For who hath known the mind of the Lord?” Whoever then imagines that he can by human reason fathom the depths of that inconceivable abyss, will be trying to explain away the astonishment at that knowledge, at which that great and mighty teacher of the gentiles was awed. For if a person thinks that he can either conceive in his mind or discuss exhaustively the designs of God through which he brings salvation to human beings, he certainly impugns the truth of the apostle’s words and asserts with profane audacity that his judgments can be scrutinized and his ways searched out. The Lord also witnesses to this when he says, “For my thoughts are not your thoughts, neither are your ways my ways.”

CONFERENCE 13:17

Isaiah 58:5

You see then that fasting is certainly not considered by the Lord as a thing that is good in its own nature, because it becomes good and pleasing to God not by itself but by in conjunction with other works. Again, in light of surrounding circumstances it may be regarded as not merely vain but actually hateful, as the Lord says: “When they fast, I will not hear their prayers.”

CONFERENCE 21:14

Isaiah 61:8

“If you offer rightly, but do not reason rightly, have you not sinned?” For those offerings of fasts, which we extort without thought by violently wrenching our stomachs and fancy that we rightly offer to the Lord, he who “loves mercy and judgment” denounces, saying: “I the Lord love judgment, but I hate robbery in a burnt offering.” Similarly, those also who take the main part of their offerings, that is, their offices and actions, to benefit the flesh for their own use, but leave the remains as a tiny portion for the Lord, are also condemned as fraudulent workers by the Divine Word, saying: “Cursed is the one who does the work of the Lord fraudulently.”

CONFERENCE 21:22

Isaiah 64:1

David also said “Lord, bend the skies and come down,” and Moses said, “Show me your face that I might see you clearly.” For no one saw more closely than Moses when receiving the law of God. God was speaking from the clouds, and [Moses] witnessed that same presence of his majesty. How, since no one saw God closer than he did, could [Moses] demand a view that was closer still when he said, “Show me yourself, that I might see you clearly”? Indeed, we can pray the same thing to happen that the apostle declared already occurred; the Lord openly revealed himself in the flesh and clearly appeared in the world, was openly assumed into glory; the saints saw the things with their physical eyes that they had previously seen with their spiritual sight.

ON THE INCARNATION OF THE LORD AGAINST NESTORIUS 5:13

Isaiah 64:6

Finally, just as our goodness with regard to the goodness above becomes like evil, so our righteousness compared with divine righteousness is like menstrual rags. This is considered to be so by Isaiah the prophet: “All our righteousnesses are like menstrual rags.” For although there is much of good works of the saints, nevertheless they are preoccupied with earthly endeavor and this holds them back and stops them from the contemplation of that higher good.

CONFERENCE 23:4

Isaiah 65:23

When God sees in us some beginnings of a good will, he at once enlightens it and strengthens it and urges it on toward salvation, increasing that which he himself implanted or which he sees to have arisen from our own efforts. In his goodness, not only does he inspire us with holy desires, but actually creates occasions for life and opportunities for good results, and shows to those in error the way of salvation.

CONFERENCE 13:8

Jeremiah 1:10

But you should know that we must work twice as hard to drive out vice as we do to acquire virtue. And this is not simply our own opinion, but we were instructed by the opinion of the One who alone knows the strength and the method of his work: “See,” he says, “I have set you this day over nations and over kingdoms, to pluck up and to break down, to destroy and to overthrow, to build and to plant.” He points out that four things are required for getting rid of poisonous elements: to root up, to pull down, to waste and to destroy. But in order to do good and acquire righteousness, all that is required is to build and to plant. It is perfectly evident that it is a harder thing to tear up and eradicate the ingrained passions of body and soul than to introduce and plant spiritual virtues.

CONFERENCE 2:14.3

Jeremiah 1:13-19

A saint is different from a sinner, not because he or she is not tempted in the same way but because he or she is not defeated even by a great assault, while the other is overcome even by a slight temptation. The strength of any good person would not, as we said, be worthy of praise, if the victory was gained without being tempted. Most certainly there is no room for victory where there is no struggle and conflict. “Blessed is the one who endures trial, for when he has stood the test, he will receive the crown of life that God has promised to those who love him.” According to the apostle Paul also, “power is made perfect” not in ease and delights but “in weakness.” “And behold,” says he, “I make you this day a fortified city, an iron pillar and bronze walls, against the whole land, against the kings of Judah, its princes, its priests and the people of the land. They will fight against you; but they shall not prevail against you, for I am with you, says the Lord, to deliver you.”

CONFERENCE 3:18.13

Jeremiah 2:9-11

The same erroneous notion by which they used to worship devils formed in the figure of people they use even now in thinking that the incomprehensible and ineffable glory of the true Deity should be worshiped under the limitations of some figure. They think they are unable to grasp and hold anything if they do not have some image set before them that they can continually address while they are at their devotion and that they can carry about in their mind and have always fixed before their eyes.… Jeremiah also says, “My people have changed their glory for an idol.”

CONFERENCE 1:10.5

Jeremiah 2:19

This then is that body of death from which we cannot escape, confined in those who are perfect, who have tested “how gracious the Lord is,” daily feel with the prophet “how bad for himself and bitter it is for a man to depart from the Lord his God.”

CONFERENCE 3:23.16

Jeremiah 2:19

So also that unwearied goodness of God and his unchanging nature hurt no one indeed, but we ourselves by falling from on high and tending to the depths are the authors of our own death, or rather the very fall becomes death to the one who falls.… For “your own wickedness shall reprove you, and your apostasy shall rebuke you. Know and see that it is an evil and a bitter thing for you to have left the Lord your God”; for “everyone is bound by the cords of his sins.”

CONFERENCE 3:23.9

Jeremiah 3:6-9

It is written in the law: “You shall not commit adultery.” This is rightly observed according to the simple meaning of the letter by one who is still in bondage to foul passions. But by one who has already forsaken these dirty acts and impure affections, it must be observed in the spirit, so that he may forsake not only the worship of idols but also all heathen superstitions and the observance of auguries and omens and all signs and days and times, or at any rate he should not be entangled in the conjectures of words and names that destroy the simplicity of our faith. This is the kind of fornication by which Jerusalem is said to have been corrupted, the fornication “on every high hill and beneath every leafing tree.” The Lord criticized Jerusalem for this through the words of the prophet, “Let them stand and save you, these astrologers who studied the stars and counted the months so as to tell from these what was coming to you.”

CONFERENCE 2:14.11

Jeremiah 3:19-22

Our obstinacy and scorn, reflecting our spirit of rebellious disdain for him when he urges us to return and be saved, is described in the following comparison. He says, “And I said you shall call me Father and shall not cease to walk after me. But as a woman that despises her lover, so has the house of Israel despised me, says the Lord.” It is only appropriate that as he has compared Jerusalem with an adulteress forsaking her husband, he compares his own love and persevering goodness with a man’s undying love for a woman. For the goodness and love of God that he has always shown to the human race could not be more appropriately described by any comparison than the case of a man inflamed with most ardent love for a woman. God’s love is overcome by no injuries that might make him stop caring for our salvation or that might drive him from his first intention as if he were defeated by our sins. Instead, he is consumed by a more burning passion for her, the more he sees that he is slighted and despised by her.

CONFERENCE 2:13.8

Jeremiah 5:21

One who does not carefully weigh every word of the opinions uttered cannot rightly discover the value of the assertion. For someone like this, who only possesses skill in disputation and ornaments of speech, cannot penetrate to the very heart of Scripture and the mysteries of its spiritual meanings. True knowledge is acquired only by true worshipers of God. And certainly this people does not possess it to whom it is said, “Hear, O foolish people, you who have no heart, you who have eyes but do not see and who have ears but do not hear.” And again, “Because you have rejected knowledge, I also will reject you from acting as my priest.” It is said that in Christ “all the treasures of wisdom and knowledge are hidden.” So how can we hold the opinion that someone has acquired spiritual knowledge when that person has not even wanted to find Christ, or, when he does find him, blasphemes him with impious lips or at least defiles the catholic faith by his impure actions? “The Spirit of God will avoid deception and does not live in a body that is subject to sin.” There is then no way of arrivin…

One who does not carefully weigh every word of the opinions uttered cannot rightly discover the value of the assertion. For someone like this, who only possesses skill in disputation and ornaments of speech, cannot penetrate to the very heart of Scripture and the mysteries of its spiritual meanings. True knowledge is acquired only by true worshipers of God. And certainly this people does not possess it to whom it is said, “Hear, O foolish people, you who have no heart, you who have eyes but do not see and who have ears but do not hear.” And again, “Because you have rejected knowledge, I also will reject you from acting as my priest.” It is said that in Christ “all the treasures of wisdom and knowledge are hidden.” So how can we hold the opinion that someone has acquired spiritual knowledge when that person has not even wanted to find Christ, or, when he does find him, blasphemes him with impious lips or at least defiles the catholic faith by his impure actions? “The Spirit of God will avoid deception and does not live in a body that is subject to sin.” There is then no way of arriving at spiritual knowledge but by this which one of the prophets has accurately described: “Sow to yourselves for righteousness. Reap the hope of life. Enlighten yourselves with the light of knowledge.”

CONFERENCE 2:14.16

Jeremiah 8:5

Those then who perish, perish against his will. This he testifies against each one of them day by day: “Turn from your evil ways. Why will you die, O house of Israel?” And again: “How often would I have gathered your children together as a hen gathers her chickens under her wings, but you would not.” And: “Why has this people in Jerusalem turned away with a stubborn revolting? They have hardened their faces and refused to return.” The grace of the Christ then is at hand every day. For it “wills all to be saved and to come to the knowledge of the truth.” It calls all without any exception, saying, “Come to me, all you who labor and are heavy laden, and I will refresh you.”

CONFERENCE 2:13.7

Jeremiah 8:17

You should know that the disease of envy is harder to cure than any other. I would say that someone tainted by its poison is almost beyond healing. This is the plague described figuratively by the prophet: “See, I will send you serpents against which there are no incantations, and they will bite you.” The bites of envy are quite rightly compared by the prophet with the lethal poison of the basilisk.

CONFERENCE 3:18.16

Jeremiah 9:4-6

Everyone is so inflamed by the love of sin and desire to carry out what they like, that they look out with watchful care for an opportunity to commit wickedness. They are afraid of being too slow to enjoy their lusts, even glorying in their shame and the great number of their crimes, as the apostle says in censure. They seek credit for themselves out of their own confusion. The prophet Jeremiah also maintains that they commit their heinous crimes not only willingly and with ease of heart and body but with laborious efforts to such an extent that they come to toil to carry them out. They are even impeded from their deadly quest of sin by the burdensome effort the actualizing of their evil desires requires, as he says: “They have labored to do wickedly.”

CONFERENCE 3:23.1

Jeremiah 9:4-6

“For every brother will utterly supplant, and every friend will walk deceitfully. And a man shall mock his brother, and they will not speak the truth, for they have bent their tongue like a bow for lies and not for truth.” But often a pretended patience excites to anger more keenly than words, and a spiteful silence exceeds the most awful insults in words. The wounds of enemies are more easily borne than the deceitful blandishment of mockers, as is well said by the prophet.

CONFERENCE 2:16.18

Jeremiah 10:23-25

The saints have never claimed that their own efforts would have enabled them to find their way along the road they were traveling to perfect virtue. Rather, they sought it from the Lord, praying, “Direct me in your truth” and “direct the road I take in your sight.” And someone else asserts that he grasped this not only through faith but also through direct experience of how things are: “I learned, Lord, that a person is no master of the road he takes, nor is it in man’s power as he goes his way to control his steps.” The Lord had this to say to Israel: “I will lead him on, like a greening fir tree, and the fruit you bear comes from me.”

CONFERENCE 1:3.13

Jeremiah 14:10-12

You see, then, that fasting is certainly not considered by the Lord as a thing that is good in its own nature, because it becomes good and well-pleasing to God not by itself but by other works. Again, from the surrounding circumstances it may be regarded as not merely empty but hateful, as the Lord says: “When they fast, I will not hear their prayers.”

CONFERENCE 3:21.14