33 Peter declared, "Even if everyone else deserts you, I will never desert you." 34 Jesus replied, "I tell you the truth, Peter-this very night, before the rooster crows, you will deny three times that you even know me." 35 "No!" Peter insisted. "Even if I have to die with you, I will never deny you!" And all the other disciples vowed the same.
Matthew Henry's Commentary on Matthew 26:33-35
Commentary on Matthew 26:31-35
(Read Matthew 26:31-35)
Improper self-confidence, like that of Peter, is the first step to a fall. There is a proneness in all of us to be over-confident. But those fall soonest and foulest, who are the most confident in themselves. Those are least safe, who think themselves most secure. Satan is active to lead such astray; they are most off their guard: God leaves them to themselves, to humble them.