21 And while they were eating, he said, "Truly I tell you, one of you will betray me." 22 They were very sad and began to say to him one after the other, "Surely you don't mean me, Lord?" 23 Jesus replied, "The one who has dipped his hand into the bowl with me will betray me. 24 The Son of Man will go just as it is written about him. But woe to that man who betrays the Son of Man! It would be better for him if he had not been born." 25 Then Judas, the one who would betray him, said, "Surely you don't mean me, Rabbi?" Jesus answered, "You have said so."
31 Then Jesus told them, "This very night you will all fall away on account of me, for it is written: " 'I will strike the shepherd, and the sheep of the flock will be scattered.'[1] 32 But after I have risen, I will go ahead of you into Galilee." 33 Peter replied, "Even if all fall away on account of you, I never will." 34 "Truly I tell you," Jesus answered, "this very night, before the rooster crows, you will disown me three times." 35 But Peter declared, "Even if I have to die with you, I will never disown you." And all the other disciples said the same.
(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.
Matthew Henry's Commentary on Matthew 26:21-25
Commentary on Matthew 26:17-25
(Read Matthew 26:17-25)
Observe, the place for their eating the passover was pointed out by Christ to the disciples. He knows those hidden ones who favour his cause, and will graciously visit all who are willing to receive him. The disciples did as Jesus had appointed. Those who would have Christ's presence in the gospel passover, must do what he says. It well becomes the disciples of Christ always to be jealous over themselves, especially in trying times. We know not how strongly we may be tempted, nor how far God may leave us to ourselves, therefore we have reason not to be high-minded, but to fear. Heart-searching examination and fervent prayer are especially proper before the Lord's supper, that, as Christ our Passover is now sacrificed for us, we may keep this feast, renewing our repentance, our faith in his blood, and surrendering ourselves to his service.