Matthew 26:22
And they were greatly distressed and began to say to him one after another: is it I, Lord? The disciples' distress — not suspicion of one another but self-examination — produces the one-after-another questioning: is it I, Lord? The question communicates genuine self-doubt: each disciple acknowledges the possibility that they are capable of the betrayal. The Lord address communicates the disciples' continuing recognition of Jesus' authority.