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: Psalm 23 (22):1; V. 1-3a, 4, 5, 6
R. The Lord ruleth me: and I shall want nothing.V. The Lord ruleth me: and I shall want nothing.He hath set me in a place of pasture.He hath brought me up, on the water of refreshment:He hath converted my soul.V. For though I should walk in the midst of the shadow of death, I will fear no evils,for thou art with me. Thy rod and thy staff, they have comforted me.V. Thou hast prepared a table before me against them that afflict me.Thou hast anointed my head with oil; and my chalice which inebriateth me, how goodly is it!V. And thy mercy will follow me all the days of my life.And that I may dwell in the house of the Lord unto length of days.
Gospel Reading: Matthew 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.
The readings from the USCCB can be found here.