Augustine of Hippo, on John 15:22

“If I had not come, and spoken to them, they would not have sin; but now they have no excuse for their sin.”

“(Tr. xc. 1) But He has just said, Because they know not Him that sent Me. How could they hate one whom they did not know? For if they hated God, believing Him to be something else, and not God, this was not hatred of God. In the case of men, it often happens that we hate or love persons whom we have never seen, simply in consequence of what we have heard of them. But if a man’s character is known to us, he cannot properly be said to be unknown. And a man’s character is not shewn by his face, but by his habits and way of life: else we should not be able to know ourselves, for we cannot see our own face. But history and fame sometimes lie; and our faith is imposed upon. We cannot penetrate into men’s hearts; we only know that such things are right, and others wrong; and if we escape error here, to be mistaken in men is a venial matter. A good man may hate a good man ignorantly, or rather love him ignorantly, for he loves the good man, though he hates the man whom he supposes him to be. A bad man may love a good man, supposing him to be a bad man like himself, and therefore not, properly speaking, loving him, but the person whom he takes him to be. And in the same way with respect to God. If the Jews were asked whether they loved God, they would reply that they did love Him, not intending to lie, but only being mistaken in so saying. For how could they who hated the Truth, love the Father of the Truth? They did not wish their actions to be judged, and this the Truth did. They hated the Truth then, because they hated the punishment which He would inflict upon such as they. But at the same time they did not know that He was the Truth, who came to condemn them. They did not know that the Truth was born of God the Father, and therefore they did not know God the Father Himself. Thus they both hated, and also knew not, the Father.”

Imported from an open dataset — not yet checked against the printed edition.