Luke 22:33

‘And he said to him, “Lord, with you I am ready to go both to prison and to death.”

Peter was appalled at Jesus' words. He had full confidence in his own ability to go through whatever was to come and to overcome it. So acknowledging Jesus' Lordship, (see in parallel John 13:37. Compare also Luke 5:8; Luke 9:54; Luke 10:17; Luke 10:40; Luke 11:1 etc.) he insists that whether it be prison or death that he has to face, he will face it without fear. And he meant it. Furthermore we must remember that in the Garden he did show his courage and was ready to take on the whole Roman army (Luke 22:50 with John 18:10), and he was even prepared to infiltrate the ranks of the enemy in the courtyard of the High Priest's house (Luke 22:54; John 18:15). But what in his self-confidence he was not aware of was what a night of terrible tension could do to a man's nerves. It required a different type of person to Peter, so confident in his own ability but so vulnerable, to stand up to that. But only Jesus knew it. (This weakness comes out again in Peter's controversy with Paul - Galatians 2:11).

‘To prison and to death.” As a former disciple of John the Baptiser Peter would have imprinted on his mind what had happened to John and he thus wanted Jesus to know that he also was prepared to face up to what John had had to face.