Numbers 30:1-8

Moses spoke to the heads of the tribes of the people of Israel, saying, “This is what the LORD has commanded. If a man vows a vow to the LORD, or swears an oath to bind himself by a pledge, he shall not break his word. He shall do according to all that proceeds out of his mouth. “If a woman vows a vow to the LORD and binds herself by a pledge, while within her father’s house in her youth, and her father hears of her vow and of her pledge by which she has bound herself and says nothing to her, then all her vows shall stand, and every pledge by which she has bound herself shall stand. But if her father opposes her on the day that he hears of it, no vow of hers, no pledge by which she has bound herself shall stand. And the LORD will forgive her, because her father opposed her. “If she marries a husband, while under her vows or any thoughtless utterance of her lips by which she has bound herself, and her husband hears of it and says nothing to her on the day that he hears, then her vows shall stand, and her pledges by which she has bound herself shall stand. But if, on the day that her husband comes to hear of it, he opposes her, then he makes void her vow that was on her, and the thoughtless utterance of her lips by which she bound herself. And the LORD will forgive her.