A.T. Robertson Commentary John 11:49

"But a certain one of them, Caiaphas, being high priest that year, said unto them, Ye know nothing at all," — John 11:49 (ASV)

Caiaphas (Καιαφας). Son-in-law of Annas and successor and high priest for 18 years (A.D. 18 to 36).

That year (του ενιαυτου εκεινου). Genitive of time; his high-priesthood included that year (A.D. 29 or 30). So he took the lead at this meeting.

Ye know nothing at all (υμεις ουκ οιδατε ουδεν). In this he is correct, for no solution of their problem had been offered.