Acts 23:20-21

20And he said, The Jews have agreed to desire thee that thou wouldest bring down Paul to morrow into the council, as though they would enquire somewhat concerning him more perfectly. 21But do not thou yield to them: for there are of them who lie in wait for him more than forty men, who have bound themselves with an oath, that they will neither eat nor drink till they have killed him: and now they are ready, looking for a promise from thee.