'Feed My Sheep' in the Bible

Again he said to him a second time; Simon, son of John, do you love me? He said to him, Yes, Lord, you know that I am a friend to you. He said to him, Feed my sheep.

He said to him a third time; Simon, son of John, are you a friend to me? Peter was grieved that he said to him the third time, Are you a friend to me? and he said to him, Lord you know all things; you know that I am a friend to you. Jesus said to him, Feed my sheep.