Acts 23:20-21

20And he said, "The Jews have agreed to ask you to bring Paul down to the council tomorrow, as though they were going to inquire somewhat more closely about him.

21But do not be persuaded by them, for more than forty of their men are lying in ambush for him, who have bound themselves by an oath neither to eat nor drink till they have killed him. And now they are ready, waiting for your consent."