John 21:17-19

¹⁷The third time He says to him, “Simon, son of Jonah, are you fond of me?” Peter was grieved in that the third time He said to him, “Are you fond of me?” and said to Him: “Lord, you know all things. You know that I'm fond of you!” Jesus says to him: “Feed my sheep.

¹⁸Most assuredly I say to you, when you were younger you used to get dressed and walk where you wished; but when you are old you will stretch out your hands and another will dress you and carry you where you do not wish.”

¹⁹(He said this to indicate the kind of death by which he would glorify God.) And upon saying that He says to him, “Follow me!”