'Curse' in the Bible

And when it was day, the Jews banded together, and bound themselves under a curse, saying that they would neither eat nor drink till they had killed Paul.

And they came to the chief priests and the elders, and said, We have bound ourselves under a great curse, to taste nothing until we have killed Paul.

Do 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.