Matthew 26:75 - Ellicott's Commentary On The Whole Bible

Peter remembered the word of Jesus. — St. Luke records (Luke 22:61) that it was at this moment, probably as He was passing from the council chamber, mocked and buffeted by the officers, that “the Lord turned and looked upon Peter.” That glance, full, we must believe, of tenderest pity and deepest sadness, as of one who was moved not by anger but by sorrow, recalled him to his better self, and the flood-gates of penitence were opened. From that hour we lose sight of him till the morning of the Resurrection. We may infer from his then appearing in company with John (John 20:3), that he turned in his contrition to the friend and companion of his early years, who had probably witnessed his denials, and was not repulsed. The fact that the record of his fall appears in every Gospel, may be noted as indicating that, in after years, he did not shrink from letting men know of his guilt, but sought rather that men might find in him (as St. Paul afterwards in his experience, 1 Timothy 1:12-16) a proof of the mercy and tender pity of his Lord.