John 21:15

So when they had dined
The Persic version adds,

Jesus turned his face to Simon Peter;
he did not interrupt them whilst they were eating; but when they had comfortably refreshed themselves, he looked at Peter, and singled him out from the rest, and directed his discourse to him; and saith unto Simon Peter,

Simon, son of Jonas;
not John, as the Vulgate Latin, and Nonnus, and some copies read; for this answers not to the Hebrew word Jochanan, but Jonah, the same name with the prophet. Some have observed, that Christ spoke to him particularly by his original name, and not by that which he himself had given him, with a view to his strong faith, as Cephas, or Peter; but it should be known that Christ calls him by this name of Simon bar Jonah, when he made the most ample profession of his faith in him, and was pronounced blessed by him, ( Matthew 16:16 Matthew 16:17 )

lovest thou me more than these?
meaning, not than the fishes he had caught, nor the net and boat, or any worldly enjoyment, nor than he loved the disciples; but the question is, whether he loved Christ more than the rest of the disciples loved him: the reason of which was, because he had some time ago declared, though all the disciples were offended at Christ, and should deny him, he would not; and had just now thrown himself into the sea to come to him first, as if he loved him more than they did: which question is put, not out of ignorance, or as if Christ knew not whether he loved him or not, and what was the degree of his affection to him; but because the exercise of this grace, and the expressions of it, are very grateful to him; and that Peter also might have an opportunity of expressing it before others, who had so publicly denied him:

he saith unto him, yea, Lord, thou knowest that I love thee:
not in word and tongue, but in deed and in truth; in sincerity, and without dissimulation, fervently and superlatively; for the truth of which he appeals to Christ himself; for he was so conscious to himself of the reality of his love, and the sincerity of his affection, that he chooses to make Christ himself judge of it, rather than say any more of it himself; though he modestly declines saying that he loved him more than the rest of the disciples did, having had an experience of his vanity and self-confidence. He was sure he loved Christ heartily; but whether he loved him more than the rest did, he chose not to say:

he saith unto him, feed my lambs;
the younger and more tender part of the flock, weak believers, Christ's little children, newborn babes, the day of small things, which are not to be despised, the bruised reed that is not to be broken, and the smoking flax that is not to be quenched; but who are to be nourished, comforted, and strengthened, by feeding them with the milk of the Gospel, and by administering to them the ordinances and breasts of consolation. These Christ has an interest in, and therefore calls them "my lambs", being given him by the Father, and purchased by his blood, and for whom he has a tender concern and affection; and nothing he looks upon as a firmer and clearer proof and evidence of love to him, than to feed these lambs of his, and take care of them.