John Calvin Reformed @genevareformer

75. And Peter remembered the word of Jesus. To the voice of the cock, Luke informs us, there was also added the look of Christ; for previously — as we learn from Mark — he had paid no attention to the cock when crowing. He must, therefore, have received the look from Christ, in order that he might come to himself.

Albert Barnes Presbyterian @notesbybarnes

Verse 75. And Peter remembered the word of Jesus, etc. Luke has mentioned a beautiful and touching circumstance omitted by the other evangelists, that when the cock crew "Jesus turned and looked upon Peter," and that then he remembered his words.