From my blogpost nearly two years ago…
And when they had sung a hymn, they went out to the Mount of Olives. Then Jesus said to them, “You will all fall away because of me this night. For it is written, ‘I will strike the shepherd, and the sheep of the flock will be scattered.’ But after I am raised up, I will go before you to Galilee.” Peter answered him, “Though they all fall away because of you, I will never fall away.” Jesus said to him, “Truly, I tell you, this very night, before the rooster crows, you will deny me three times.” Peter said to him, “Even if I must die with you, I will not deny you!” And all the disciples said the same (Matt 26:30-35 ESV).
The “hymn” refers to Psalm 118, in which the Messiah is name some thirty times as “Jah, Elohim, and Jehovah.” Then Jesus makes reference to the Prophet Zechariah who said, “Awake, O sword, against My Shepherd, and against the Man Who is My Fellow, says the LORD of Hosts; smite the Shepherd, and the sheep shall be scattered” (Zech 13:7 KJV). The “Shepherd” is Jesus, and the “sheep” are the Disciples, who forsook Him and fled.
And once again, Peter falls into the trap of disagreeing with Jesus. The Gospel of Luke records that this was his response to Jesus warning him, “Simon, simon, behold, Satan has desired to have you, that he may sift you as wheat; but I have prayed for you that your Faith fail not” (Luke 22:31-32 KJV).
Then Jesus tells him that he is going to deny Him three times in short order, and Peter argues further. He insisted that he would die with Jesus before denying Him.
Source: The Time is at Hand