John Cassian — Commentary on Scripture

Isaiah 43:25

“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"

Isaiah 43:25

“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.”

CONFERENCE 20:8

Isaiah 45:3

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.”

INSTITUTES 5:2.2

Isaiah 46:10

“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.”

CONFERENCE 9:20

Isaiah 49:15

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"

Isaiah 49:15

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.

CONFERENCE 13:17

Isaiah 52:3

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.

INSTITUTES 10:21.2

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