And after a while came unto him they that stood by, and said to Peter, Surely thou also art one of them; for thy speech bewrayeth thee.

People's New Testament

26:73 Thou also art one of them; for thy speech bewrayeth thee. Matthew says, After awhile; Luke says, About an hour after (Lu 22:59). John says that the third charge was made by a kinsman of Malchus, who asserted that he saw Peter in the garden (Joh 18:26). Mark says that they accused him of having a Galilean brogue (Mr 14:70). As most of the disciples of Jesus were Galileans, this draws attention to Peter. Different districts had their dialects, as in England, or the United States.

Wesley's Notes

26:73 Surely thou art also one of them, for thy speech discovereth thee - Malchus might have brought a stronger proof than this. But such is the overruling providence of God, that the world, in the height of their zeal, commonly catch hold of the very weakest of all arguments against the children of God.

Matthew Henry's Concise Commentary

26:69-75 Peter's sin is truly related, for the Scriptures deal faithfully. Bad company leads to sin: those who needlessly thrust themselves into it, may expect to be tempted and insnared, as Peter. They scarcely can come out of such company without guilt or grief, or both. It is a great fault to be shy of Christ; and to dissemble our knowledge of him, when we are called to own him, is, in effect, to deny him. Peter's sin was aggravated; but he fell into the sin by surprise, not as Judas, with design. But conscience should be to us as the crowing of the cock, to put us in mind of the sins we had forgotten. Peter was thus left to fall, to abate his self-confidence, and render him more modest, humble, compassionate, and useful to others. The event has taught believers many things ever since, and if infidels, Pharisees, and hypocrites stumble at it or abuse it, it is at their peril. Little do we know how we should act in very difficult situations, if we were left to ourselves. Let him, therefore, that thinketh he standeth, take heed lest he fall; let us all distrust our own hearts, and rely wholly on the Lord. Peter wept bitterly. Sorrow for sin must not be slight, but great and deep. Peter, who wept so bitterly for denying Christ, never denied him again, but confessed him often in the face of danger. True repentance for any sin will be shown by the contrary grace and duty; that is a sign of our sorrowing not only bitterly, but sincerely.