John 21:15-17

15 And when they had eaten, Jesus saith to Simon Peter, Simon of Jonas, lovest thou me more than these? He saith to him, Yea, Lord, thou knowest that I love thee. Jesus saith to him, Feed thou my lambs [Feed my lambs].

16 Again he saith to him, Simon of Jonas, lovest thou me? He saith to him, Yea, Lord, thou knowest that I love thee. He saith to him, Feed thou my lambs.

17 He saith to him the third time, Simon of Jonas, lovest thou me? Peter was heavy [sorry], for he said to him the third time, Lovest thou me, and he saith to him, Lord, thou knowest all things; thou knowest that I love thee. Jesus saith to him, Feed my sheep.