Luke 22:23
And they began to enquire among themselves, which of them it was that should do this thing.
Cross-references
Matthew 26:22
Parallel
Matthew 26:22 shows the disciples' sorrowful response 'Is it I?' — the same reaction to Jesus' betrayal announcement.
Mark 14:19
Parallel
Mark 14:19 records the same sorrowful questioning 'Is it I?' — a parallel account of the disciples' distress.
John 13:22–25
Parallel
John 13:22-25 expands the questioning with Peter motioning to John — extra detail on the disciples' uncertainty.