58 But Peter followed him at a distance, right up to the courtyard of the high priest. He entered and sat down with the guards to see the outcome.
69 Now Peter was sitting out in the courtyard, and a servant girl came to him. "You also were with Jesus of Galilee," she said. 70 But he denied it before them all. "I don't know what you're talking about," he said. 71 Then he went out to the gateway, where another servant girl saw him and said to the people there, "This fellow was with Jesus of Nazareth." 72 He denied it again, with an oath: "I don't know the man!" 73 After a little while, those standing there went up to Peter and said, "Surely you are one of them; your accent gives you away." 74 Then he began to call down curses, and he swore to them, "I don't know the man!" Immediately a rooster crowed. 75 Then Peter remembered the word Jesus had spoken: "Before the rooster crows, you will disown me three times." And he went outside and wept bitterly.
(Read Matthew 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.
Matthew Henry's Commentary on Matthew 26:58
Commentary on Matthew 26:57-68
(Read Matthew 26:57-68)
Jesus was hurried into Jerusalem. It looks ill, and bodes worse, when those who are willing to be Christ's disciples, are not willing to be known to be so. Here began Peter's denying him: for to follow Christ afar off, is to begin to go back from him. It is more our concern to prepare for the end, whatever it may be, than curiously to ask what the end will be. The event is God's, but the duty is ours. Now the Scriptures were fulfilled, which said, False witnesses are risen up against me. Christ was accused, that we might not be condemned; and if at any time we suffer thus, let us remember we cannot expect to fare better than our Master. When Christ was made sin for us, he was silent, and left it to his blood to speak. Hitherto Jesus had seldom professed expressly to be the Christ, the Son of God; the tenor of his doctrine spoke it, and his miracles proved it; but now he would not omit to make an open confession of it. It would have looked like declining his sufferings. He thus confessed, as an example and encouragement to his followers, to confess him before men, whatever hazard they ran. Disdain, cruel mocking, and abhorrence, are the sure portion of the disciple as they were of the Master, from such as would buffet and deride the Lord of glory. These things were exactly foretold in the fiftieth chapter of Isaiah. Let us confess Christ's name, and bear the reproach, and he will confess us before his Father's throne.