John 21:19
Now he said this, signifying by what kind of death he would glorify God. When he had said this, he said to him, “Follow me.”
World English Bible (Public Domain)
In context
Before · John 21:17–18
17He said to him the third time, “Simon, son of Jonah, do you have affection for me?” Peter was grieved because he asked him the third time, “Do you have affection for me?” He said to him, “Lord, you know everything. You know that I have affection for you.” Jesus said to him, “Feed my sheep. 18Most certainly I tell you, when you were young, you dressed yourself and walked where you wanted to. But when you are old, you will stretch out your hands, and another will dress you and carry you where you don’t want to go.”
19Now he said this, signifying by what kind of death he would glorify God. When he had said this, he said to him, “Follow me.”