Matthew 14:9

14:9 Although it grieved the king, because of his oath and the dinner guests he commanded it to be given.

Acts 23:12-15

The Plot to Kill Paul

23:12 When morning came, the Jews formed a conspiracy and bound themselves with an oath not to eat or drink anything until they had killed Paul. 23:13 There were more than forty of them who formed this conspiracy. 23:14 They went to the chief priests and the elders and said, “We have bound ourselves with a solemn oath not to partake of anything until we have killed Paul. 23:15 So now you and the council request the commanding officer to bring him down to you, as if you were going to determine his case by conducting a more thorough inquiry. We are ready to kill him before he comes near this place.”