John 13:21,22 - Joseph Benson’s Commentary on the Old and New Testaments

When Jesus had thus said, he was troubled in spirit To think of so ungrateful and impious a design in one so near him, and so much obliged to him; and testified As they sat together, and were eating the paschal-supper, Mark 14:18; Verily, one of you shall betray me Verily, how incredible soever what I now say may appear to you, one of you, who is eating with me in this friendly and intimate manner; even one of you, my apostles and constant followers, shall, or will betray me, to those that thirst for my blood. None, indeed, could be said to betray him but those in whom he reposed confidence, and were the witnesses of his retirement. This did not lay Judas under any fatal necessity of committing the sin here spoken of; for though the event followed according to the prediction, yet it was not caused by the prediction, but would have equally happened if no such prediction had been uttered. Our Lord's speaking thus indefinitely at first, and only saying, one of you, was profitable to them all, as leading them all seriously to examine themselves. Then the disciples looked one on another For some time, in silence, and with great astonishment; doubting of whom he spake And studious to observe in whose countenance they might read any peculiar confusion, which might look like an indication of guilt.