First Reading 1 Pet 5:1-4
The ancients therefore that are among you, I beseech, who am myself also an ancient, and a witness of the sufferings of Christ: as also a partaker of that glory which is to be revealed in time to come: Feed the flock of God which is among you, taking care of it, not by constraint, but willingly, according to God: not for filthy lucre’s sake, but voluntarily: Neither as lording it over the clergy, but being made a pattern of the flock from the heart. And when the prince of pastors shall appear, you shall receive a never fading crown of glory.
Responsorial Psalm Ps 89:2-3, 4-5, 21-22, 25, 27
The mercies of the Lord I will sing for ever. I will shew forth thy truth with my mouth to generation and generation. For thou hast said: Mercy shall be built up for ever in the heavens: thy truth shall be prepared in them.
I have made a covenant with my elect: I have sworn to David my servant: Thy seed will I settle for ever. And I will build up thy throne unto generation and generation.
I have found David my servant: with my holy oil I have anointed him. For my hand shall help him: and my arm shall strengthen him.
And my truth and my mercy shall be with him: and in my name shall his horn be exalted.
He shall cry out to me: Thou art my father: my God, and the support of my salvation.
Gospel Matt 16:13-19
And Jesus came into the quarters of Caesarea Philippi: and he asked his disciples, saying: Whom do men say that the Son of man is? But they said: Some John the Baptist, and other some Elias, and others Jeremias, or one of the prophets. Jesus saith to them: But whom do you say that I am? Simon Peter answered and said: Thou art Christ, the Son of the living God. And Jesus answering, said to him: Blessed art thou, Simon Bar-Jona: because flesh and blood hath not revealed it to thee, but my Father who is in heaven. And I say to thee: That thou art Peter ; and upon this rock I will build my church, and the gates of hell shall not prevail against it. And I will give to thee the keys of the kingdom of heaven. And whatsoever thou shalt bind upon earth, it shall be bound also in heaven: and whatsoever thou shalt loose upon earth , it shall be loosed also in heaven.