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 40 (39):8a, 9a; V. 2 and 4ab, 7-8a, 8b-9, 10
R. Then said I, Behold I come. That I should do thy will:V. With expectation I have waited for the Lord,and he was attentive to me.And he put a new canticle into my mouth,a song to our God.V. Sacrifice and oblation thou didst not desire;but thou hast pierced ears for me.Burnt offering and sin offering thou didst not require:Then said I, Behold I come.V. In the head of the book it is written of meThat I should do thy will:O my God, I have desired it,and thy law in the midst of my heart.V. I have declared thy justicein a great church,lo, I will not restrain my lips:O Lord, thou knowest it.
Gospel Reading: John 21:15-17
When therefore they had dined, Jesus saith to Simon Peter: Simon son of John, lovest thou me more than these? He saith to him: Yea, Lord, thou knowest that I love thee. He saith to him: Feed my lambs. He saith to him again: Simon, son of John, lovest thou me? He saith to him: Yea, Lord, thou knowest that I love thee. He saith to him: Feed my lambs. He said to him the third time: Simon, son of John, lovest thou me? Peter was grieved, because he had said to him the third time: Lovest thou me? And he said to him: Lord, thou knowest all things: thou knowest that I love thee. He said to him: Feed my sheep.
The readings from the USCCB can be found here.