Augustine of Hippo
Catena Aurea · Lukasevangelium 22
Then took they him, and led him, and brought him into the high priest’s house. And Peter followed affar off. And when they had kindled a fire in the midst of the hall, and were set down together, Peter sat down among them. But a certain maid beheld him as he sat by the fire, and earnestly looked upon him, and said, This man was also with him. And he denied him, saying, Woman, I know him not. And after a little while another saw him, and said, Thou art also of them. And Peter said, Man, I am not. And about, the space of one hour after another confidently affirmed, saying, Of a truth this fellow also was with him: for he is a Galilæan. And Peter said, Man, I know not what thou sayest. And immediately, while he yet spake, the cock crew. And the Lord turned, and looked upon Peter. And Peter remembered the word of the Lord, how he had said unto him, Before the cock crow, thou shalt deny me thrice. And Peter went out, and wept bitterly.
(ut sup.) How we should understand this, requires some careful consideration; for Matthew says, Peter was sitting without in the hall, which he would not have said unless the transaction relating to our Lord were passing within. Likewise also, where Mark said, And as Peter was beneath in the hall, he shews that the things he had been speaking of took place not only within but in the upper part. How then did our Lord look upon Peter? not with His bodily face, since Peter was without in the hall among those who were warming themselves, while these things were going on in the inner part of the house. Wherefore, that looking upon Peter seems to me to have been done in a divine manner. And as it was said, Look thou, and hear me, (Ps. 13:3.) and, Turn and deliver my soul, (Ps. 6:4.) so I think the expression here used, The Lord turned and looked upon Peter.