Genesis 18:20

Then I replied, “You are aware, then, that the Scripture says, ‘And the Lord said to Abraham, Why did Sarah laugh, saying, Shall I truly conceive? for I am old. Is anything impossible with God? At the time appointed shall I return to thee according to the time of life, and Sarah shall have a son.’ And after a little interval: ‘And the men rose up from thence, and looked towards Sodom and Gomorrah; and Abraham went with them, to bring them on the way. And the Lord said, I will not conceal from Abraham, my servant, what I do.’ And again, after a little, it thus says: ‘The Lord said, The cry of Sodom and Gomorrah is great, and their sins are very grievous. I will go down now, and see whether they have done altogether according to their cry which has come unto me; and if not, that I may know. And the men turned away thence, and went to Sodom. …

Add to this, that sins, however great and detestable they may be, are looked upon as trivial, or as not sins at all, when men get accustomed to them; and so far does this go, that such sins are not only not concealed, but are boasted of, and published far and wide; and thus, as it is written, “The wicked boasteth of his heart’s desire, and blesseth the covetous, whom the Lord abhorreth.” Iniquity of this kind is in Scripture called a cry . You have an instance in the prophet Isaiah, in the case of the evil vineyard: “He looked for judgment, but behold oppression; for righteousness, but behold a cry.” Whence also the expression in Genesis: “The cry of Sodom and Gomorrah is great,” because in these cities crimes were not only not punished, but were openly committed, as if under the protection of the law. …

And the Father too will be found to be saying such things. For He Himself likewise saith, “Adam, where art thou?”and, “The cry of Sodom and Gomorrah is waxed great before me. I will go down therefore, and see whether their doings be according to their cry which cometh unto me, and if not, I will know.” And elsewhere He saith, “Whether they will hear, whether they will understand.” And in the gospel too, “It may be they will reverence my Son:”all which are expressions of ignorance. …

Now the God of all said to the patriarch Abraham about Sodom and Gomorrah: “Because the cry of Sodom and Gomorrah is very great and because their sin is very grievous; I will go down now and see whether they have done altogether according to the cry of it which is come unto me; and if not, I will know.” He knew quite well the wickedness of those men, and nevertheless He said, “I will go down and see,” so teaching us to wait for the proof of facts. But these men never summoned me to trial, they never heard the sound of my voice, they refused to hear from me a statement of my opinions, and handed me over, as a victim to be slaughtered, to the rage of the enemies of the truth.

25. In another instance the Scripture reveals through Abraham that it was God Who spoke. He receives the further promise of a son, Isaac. Afterwards there appear to him three men. Abraham, though he sees three, worships One, and acknowledges Him as Lord. Three were standing before him, Scripture says, but he knew well Which it was that he must worship and confess. There was nothing in outward appearance to distinguish them, but by the eye of faith, the vision of the soul, he knew his Lord. Then the Scripture goes on, And He said unto him, I will certainly return unto thee at this time hereafter, and Sarah thy wife shall have a son ; and afterwards the Lord said to Him, I will not conceal from Abraham My servant the things that I will do ; and again, Moreover the Lord said, The cry of Sodom and Gomorrah is filled up, and their sins are exceeding great . …

63. Whenever God says that He does not know, He professes ignorance indeed, but is not under the defect of ignorance. It is not because of the infirmity of ignorance that He does not know, but because it is not yet the time to speak, or the divine Plan to act. Thus He says to Abraham, The cry of Sodom and Gomorrah is full, and their sin is very grievous. Therefore I will go down now, and see if they have done altogether according to the cry of it: and if not, I will know . Here we perceive God not knowing that which notwithstanding He knows. He knows that their sins are very grievous, but He comes down again to see whether they have done altogether, and to know if they have not. We observe, then, that He is not ignorant, although He does not know, but that, when the time comes for action, He knows. …

( Admonition 32.) Differently to be admonished are they who even praise the unlawful things which they do, and those who censure what is wrong, and yet avoid it not. For they who even praise the unlawful things which they do are to be admonished to consider how for the most part they offend more by the mouth than by deeds. For by deeds they perpetrate wrong things in their own persons only; but with the mouth they bring out wickedness in the persons of as many as there are souls of hearers, to whom they teach wicked things by praising them. They are therefore to be admonished that, if they evade the eradication of evil, they at least be afraid to sow it. They are to be admonished to let their own individual perdition suffice them. And again they are to be admonished that, if they fear not to be bad, they at least blush to be seen to be what they are. …