Last year, I have reflected on a similar passage from Luke; focusing on our understanding of who Jesus is (Lk 9:18-24). This year, I would like to give some thoughts on our faith in relation to the keys of Peter.
Peter's confession of faith reveals a reality that most of us have overlooked; that faith is a divine gift (rf CCC 153). What Jesus says is perfectly true: Peter's conviction of our Lord's divinity is not acquired in any human manner, but is a revelation from the heavenly Father. Our capacity to believe the hypostatic union of Jesus Christ (union of both the divine and human nature in Him as a single person) would not have come from any natural effort of learning. In fact, quite contrary to our intellect, this is totally absurd if not ridiculous. To be able to believe such apparent foolishness, we need a supernatural grace from God and a right human disposition (rf CCC 154, cf Lk 8:15). Once we respond to this sacred gift of God, we are able to realize God's loving plan to save humanity through the incarnate Son.
But faith is not just some superficial joyful hearings of God's word. Jesus in His Parable of the Sower has clearly stated that in order to be truly saved, one's faith has to take root and bear fruit (Lk 8:4-8; cf Mt 7:17-20, Mk 4:20). “Faith is not an isolated act. No one can believe alone, just as no one can live alone . . . Each believer is thus a link in the great chain of believers” which is: the community, the Church (CCC 166). “It is the Church that believes first, and so bears, nourishes, and sustains our faith” (CCC 168).
Peter is entrusted by Jesus with a specific task. He is the “rock” of His Church. The “keys” given to Peter signify his authority to govern the House of God, the Church (cf Is 22:19-23, CCC 553). Bonded in unity with Peter, the rest of the apostles are also given the pastoral office to look after the flock (cf Jn 21:15-17, CCC 880). In a similar manner, each pope, in succession to Peter, receives the same divine command to maintain fidelity to the tradition of the revealed faith. And Jesus' words to Peter are in effect to every pope who sits in the chair of Peter. This does not imply that the popes can make any arbitrary decisions regarding doctrinal and moral matters (rf CCC 891).Together with the college of bishops, under the primacy of the Pope, they carry the entrusted task of shepherding and guarding the doctrinal truth from error (rf CCC 881).
Let us be reminded that though truly our faith is a gift - an immense privilege of belief - it is also our faith in a divinely instituted Church that continues to assure us of remaining in the truth. For “I cannot believe without being carried by the faith of others, and by my faith I help support others in the faith” (CCC 166).