15 Then when they had taken food, Jesus said to Simon Peter, Simon, son of John, is your love for me greater than the love of these others? He said to him, Yes, Lord; you are certain of my love for you. He said to him, Then give my lambs food. 16 Again, a second time, he said to him, Simon, son of John, have you any love for me? Yes, Lord, he said, you are certain of my love for you. Then take care of my sheep, said Jesus. 17 He said to him a third time, Simon, son of John, am I dear to you? Now Peter was troubled in his heart because he put the question a third time, Am I dear to you? And he said to him, Lord, you have knowledge of all things; you see that you are dear to me. Jesus said to him, Then give my sheep food. 18 Truly I say to you, When you were young, you made yourself ready and went wherever you had a desire to go: but when you are old, you will put out your hands and another will make you ready, and you will be taken where you have no desire to go.
Matthew Henry's Commentary on John 21:15-18
Commentary on John 21:15-19
(Read John 21:15-19)
Our Lord addressed Peter by his original name, as if he had forfeited that of Peter through his denying him. He now answered, Thou knowest that I love thee; but without professing to love Jesus more than others. We must not be surprised to have our sincerity called into question, when we ourselves have done that which makes it doubtful. Every remembrance of past sins, even pardoned sins, renews the sorrow of a true penitent. Conscious of integrity, Peter solemnly appealed to Christ, as knowing all things, even the secrets of his heart. It is well when our falls and mistakes make us more humble and watchful. The sincerity of our love to God must be brought to the test; and it behoves us to inquire with earnest, preserving prayer to the heart-searching God, to examine and prove us, whether we are able to stand this test. No one can be qualified to feed the sheep and lambs of Christ, who does not love the good Shepherd more than any earthly advantage or object. It is the great concern of every good man, whatever death he dies, to glorify God in it; for what is our chief end but this, to die to the Lord, at the word of the Lord?