Matthew 26:22 - And they were exceeding sorrowful, and began every one of them to say unto him, Lord, is it I? (Verses like Matthew 26:22)
Luke 22:21-23 - But, behold, the hand of him that betrayeth me is with me on the table.And truly the Son of man goeth, as it was determined: but woe unto that man by whom he is betrayed!And they began to enquire among themselves, which of them it was that should do this thing. (Verses like Luke 22:21)
John 13:22 - Then the disciples looked one on another, doubting of whom he spake. (Verses like John 13:22)