When a man vows a vow to the LORD, or swears an oath to bind his soul with a bond, he shall not break his word. He shall do according to all that proceeds out of his mouth.
“‘Or if anyone swears rashly with his lips to do evil or to do good—whatever it is that a man might utter rashly with an oath, and it is hidden from him—when he knows of it, then he will be guilty of one of these.
Behold, on the mountains the feet of him who brings good news, who publishes peace! Keep your feasts, Judah! Perform your vows, for the wicked one will no more pass through you. He is utterly cut off.
When it was day, some of the Judeans banded together and bound themselves under a curse, saying that they would neither eat nor drink until they had killed Paul.
Therefore don’t yield to them, for more than forty men lie in wait for him, who have bound themselves under a curse to neither eat nor drink until they have killed him. Now they are ready, looking for the promise from you.”
Then Jephthah went with the elders of Gilead, and the people made him head and chief over them. Jephthah spoke all his words before the LORD in Mizpah.
At the end of two months, she returned to her father, who did with her according to his vow which he had vowed. She was a virgin. It became a custom in Israel