Genesis 18:22

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. …

“These and other such sayings are recorded by the lawgiver and by the prophets; and I suppose that I have stated sufficiently, that wherever God says, ‘God went up from Abraham,’ or, ‘The Lord spake to Moses,’ and ‘The Lord came down to behold the tower which the sons of men had built,’ or when ‘God shut Noah into the ark,’ you must not imagine that the unbegotten God Himself came down or went up from any place. For the ineffable Father and Lord of all neither has come to any place, nor walks, nor sleeps, nor rises up, but remains in His own place, wherever that is, quick to behold and quick to hear, having neither eyes nor ears, but being of indescribable might; and He sees all things, and knows all things, and none of us escapes His observation; and He is not moved or confined to a spot in the whole world, for He existed before the world was made. …

Reason, the governing principle, remaining unmoved and guiding the soul, is called its pilot. For access to the Immutable is obtained by a truly immutable means. Thus Abraham was stationed before the Lord, and approaching spoke. And to Moses it is said, “But do thou stand there with Me.” And the followers of Simon wish be assimilated in manners to the standing form which they adore. Faith, therefore, and the knowledge of the truth, render the soul, which makes them its choice, always uniform and equable. For congenial to the man of falsehood is shifting, and change, and turning away, as to the Gnostic are calmness, and rest, and peace. …

55. But no one will doubt that the Spirit is one, although very many have doubted whether God be one. For many heretics have said that the God of the Old Testament is one, and the God of the New Testament is another. But as the Father is one Who both spake of old, as we read, to the fathers by the prophets, and to us in the last days by His Son; “and as the Son is one, Who according to the tenour of the Old Testament was offended by Adam, seen by Abraham, worshipped by Jacob; so, too, the Holy Spirit is one, who energized in the prophets, was breathed upon the apostles, and was joined to the Father and the Son in the sacrament of baptism. For David says of Him: “And take not Thy Holy Spirit from me.” And in another place he said of Him: “Whither shall I go from Thy Spirit?”