And they began to inquire among themselves, which of them it was that should do this thing.
Matthew 26:22 And they were exceeding sorrowful, and began every one of them to say to him, Lord, is it I?
Mark 14:19 And they began to be sorrowful, and to say to him one by one, Is it I? and another said, Is it I?
John 13:22-25 Then the disciples looked one on another, doubting of whom he spoke...