Matthew 26:22

‘And they were deeply sorry, and began to say to him, every one, “Is it I, Lord?” '

The seriousness with which Jesus said it struck home to all present except one, and they were all deeply sorry at the thought. Indeed such was their awareness of their own weakness that each thought it just possible that it might be himself, probably not in the full sense of which it was true of Judas, but in the sense of in some way letting Jesus down at a moment of crisis. This possibly brings out how tense they were all feeling. Peter, who at first was confident that it could not be him, no doubt did feel in the end that he had betrayed Jesus. In the Greek the question is, however, asked in a way that expects a negative answer. They were doubtful and yet self-confident, for they knew something of themselves and yet knew also that they loved Him.