3 Bible Verses about Vowing To Fast

Then as soon as it was day, some of the Jews forming a conspiracy, bound themselves under the direst imprecation, declaring that they would neither eat nor drink till they had killed Paul.

So they came to the high-priests and elders, and said, We have bound ourselves by the direst imprecation, to taste nothing till we have killed Paul.

But do not thou consent to them: for more than forty men of them are lying in wait for him, who have bound themselves under an anathema, neither to eat nor drink till they have killed him: and now they are in readiness, waiting only to procure the promise from thee.