66 While all this was going on, Peter was down in the courtyard. One of the Chief Priest's servant girls came in 67 and, seeing Peter warming himself there, looked hard at him and said, "You were with the Nazarene, Jesus." 68 He denied it: "I don't know what you're talking about." He went out on the porch. A rooster crowed. 69 The girl spotted him and began telling the people standing around, "He's one of them." 70 He denied it again. After a little while, the bystanders brought it up again. "You've got to be one of them. You've got 'Galilean' written all over you." 71 Now Peter got really nervous and swore, "I never laid eyes on this man you're talking about." 72 Just then the rooster crowed a second time. Peter remembered how Jesus had said, "Before a rooster crows twice, you'll deny me three times." He collapsed in tears.
Matthew Henry's Commentary on Mark 14:66-72
Commentary on Mark 14:66-72
(Read Mark 14:66-72)
Peter's denying Christ began by keeping at a distance from him. Those that are shy of godliness, are far in the way to deny Christ. Those who think it dangerous to be in company with Christ's disciples, because thence they may be drawn in to suffer for him, will find it much more dangerous to be in company with his enemies, because there they may be drawn in to sin against him. When Christ was admired and flocked after, Peter readily owned him; but will own no relation to him now he is deserted and despised. Yet observe, Peter's repentance was very speedy. Let him that thinketh he standeth take heed lest he fall; and let him that has fallen think of these things, and of his own offences, and return to the Lord with weeping and supplication, seeking forgiveness, and to be raised up by the Holy Spirit.