My dearly beloved Sons,
Acknowledging Christ, this is the concern for truth that seems to prompt the question the Lord asks of His apostles, and especially of Peter, who answers it in the name of all. The answer is not that obvious, as witnessed by the various opinions several disciples report concerning the Son of man’s identity: John the Baptist, Elijah, Jeremy, or one of the prophets. Acknowledging the Son of man also means appropriating a mission. St. Peter’s confession in Caesarea marks a milestone in the progressive revelation Christ makes of His imminent Passion and resurrection:
From that time, Jesus began to shew to His disciples, that He must go to Jerusalem, and suffer many things from the ancients and scribes and chief priests, and be put to death, and the third day rise again. (Mt 16:21)
Confessing what the Son of man is, is not sufficient, and Peter has yet to understand it. Despite the fact that he proclaims Christ’s divinity, “Thou art Christ, the Son of the living God!” (Mt 16:16), Peter doesn’t seem to be ready to follow the path the Lord is showing him. He doesn’t under-stand the Lord’s mission, and consequently, he won’t be able to accept his own mission, in the Christ’s footsteps. Faced with the scandal of the Cross, Peter rebels, takes Christ aside, and forcefully rebukes Him: