Mark 14:19-20

14:19 They were distressed, and one by one said to him, “Surely not I?” 14:20 He said to them, “It is one of the twelve, one who dips his hand with me into the bowl.

Luke 22:23

22:23 So they began to question one another as to which of them it could possibly be who would do this.

John 13:22-25

13:22 The disciples began to look at one another, worried and perplexed to know which of them he was talking about. 13:23 One of his disciples, the one Jesus loved, was at the table to the right of Jesus in a place of honor. 13:24 So Simon Peter gestured to this disciple to ask Jesus who it was he was referring to. 13:25 Then the disciple whom Jesus loved leaned back against Jesus’ chest and asked him, “Lord, who is it?”

John 21:17

21:17 Jesus said a third time, “Simon, son of John, do you love me?” Peter was distressed that Jesus asked him a third time, “Do you love me?” and said, “Lord, you know everything. You know that I love you.” Jesus replied, “Feed my sheep.