John 21:17-19

John 21:17-19. Jesus saith unto him, Feed my sheep. Verily, verily, I say unto thee, When thou wast young, thou girdest thyself, and walkedst whither thou willest: but when thou shalt be old, thou shalt stretch forth thy hands, and another shall gird thee, and carry thee whither thou wouldest not. This spake he, signifying by what death he should glorify God. And When he had spoken this, he saith unto him, Follow me.

Peter’s death was to glorify God, so he might well be content, painful though it was to be.