Luke 11:19

οἱ υἱοὶ ὑμῶν ἐν τίνι ἐκβάλλουσιν; The “pupils of the wise” might be called the ‘sons of the Pharisees’ just as the youths in the Prophetic schools were called ‘sons of the Prophets.’ The reality of the Jewish exorcisms is not here necessarily admitted (Acts 19:13). It was enough that the admitted pretensions to such powers among the Pharisees justified this incontrovertible argumentum ad hominem. See the very remarkable account of an exorcism by Eleazar in the presence of Vespasian in Josephus (Antt. VIII. 2, § 5). The immense superiority in wisdom and truthfulness of the Evangelist at once appears when we read this story.