Matthew 26:40, 41 Jesus used Peter's drowsiness to warn him about the kinds of temptation he would soon face. The way to overcome temptation is to keep watch and pray. Watching means being aware of the possibilities of temptation, sensitive to the subtleties, and spiritually equipped to fight it. Because temptation strikes where we are most vulnerable, we can resist it alone. Prayer is essential, because God's strength can shore up our defenses and defeat satan's power.
Matthew 26:48 Judas had told the crowd to arrest the man he kissed. This was not an arrest by Roman soldiers under Roman law, but an arrest by the religious leaders. Judas pointed out Jesus, not because He was hard to recognize, but because Judas agreed to be the formal accuser in case a trial was called. Judas was able to lead the group to one of Jesus' retreats where no onlookers would interfere with the arrest.
Matthew 26:51-53 The man who cut off the servant's ear was Peter (John 18:10). Peter was trying to prevent what he saw as "defeat." He didn't realize that Jesus had to die in order to gain victory. But Jesus demonstrated perfect commitment to His Father's will. His kingdom would not be advanced with swords, but with faith and obedience.
Matthew 26:55 Although the religious leaders could have arrested Jesus at any time, they came at night because they were afraid of the crowds that followed Him each day.