Augustine of Hippo
Catena Aurea · Johannesevangelium 8
Then said the Jews unto him, Now we know that thou hast a devil. Abraham is dead, and the prophets; and thou sayest, If a man keep my saying, he shall never taste of death. Art thou greater than our father Abraham, which is dead? and the prophets are dead; whom makest thou thyself? Jesus answered, If I honour myself, my honour is nothing; it is my Father that honoureth me; of whom ye say, that he is your God: Yet ye have not known him; but I know him: and if I should say, I know him not, I shall be a liar like unto you: but I know him, and keep his saying. Your father Abraham rejoiced to see my day: and he saw it, and was glad.
(Tr. xliii. 16) He did not fear, but rejoiced to see: he rejoiced in hope, believing, and so by faith saw. It admits of doubt whether He is speaking here of the temporal day of the Lord, that, viz. of His coming in the flesh, or of that day which knows neither rising or setting. I doubt not however that our father Abraham knew the whole: as he says to his servant whom he sent, Put thy hand under my thigh, and swear to me by the God of heaven. (Gen. 24:2) What did that oath signify, but that the God of heaven was to come in the flesh, out of the stock of Abraham.