Acts 23:20-21

20And he said, The Jews have agreed to ask thee to bring down Paul to-morrow unto the council, as though thou wouldest inquire somewhat more exactly concerning him. 21Do not thou therefore yield unto them: for there lie in wait for him of them more than forty men, who have bound themselves under a curse, neither to eat nor to drink till they have slain him: and now are they ready, looking for the promise from thee.