John the Apostle
John 21:16BSB·traditional attribution

Jesus asked a second time, “Simon son of John, do you love Me?” “Yes, Lord,” he answered, “You know I love You.” Jesus told him, “Shepherd My sheep.”

John Calvin Reformed @genevareformer

16. Feed my sheep. Christ does not give to Peter and others the office of feeding all sorts of persons, but only his sheep or his lambs. He elsewhere describes who they are whom he reckons to belong to his flock.

Matthew Henry Presbyterian @wholebiblehenry

We have here Christ's discourse with Peter after dinner, so much of it as relates to himself, in which, I. He examines his love to him, and gives him a charge concerning his flock, Joh 21:15-17. Observe, 1. When Christ entered into this discourse with Peter.

Commenting on John 21:15-19

John Gill Reformed Baptist @doctorgill

He saith unto him again the second time,.... Willing to have the expressions of his love repeated and confirmed; Simon, son of Jonas, lovest thou me? he leaves out the words, "more than these", though Nonnus expresses them; he saw Peter's heart, and observed the modesty of his answer, and would not urge him any more in that comparative way, only required a repetition of...