Numbers 30:2-4

English Standard Version

^2 (A)If a man vows a vow to the Lord, or ^(B)swears an oath to bind himself by a pledge, he shall not break his word. ^(C)He shall do according to all that proceeds out of his mouth.

Women and Vows

³ “If a woman vows a vow to the Lord and binds herself by a pledge, while within her father's house in her youth, ⁴ 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.