Acts 23:20-21

20And he said, “The Jews have agreed to ask you to bring Paul down to the Council (Sanhedrin, Jewish High Court) tomorrow, as if they were going to interrogate him more thoroughly.

21But do not listen to them, for more than forty of them are lying in wait for him, and they have bound themselves with an oath not to eat or drink until they have killed him. Even now they are ready, just waiting for your promise.”