Numbers 30:1-3

New Revised Standard Version, Anglicised Catholic Edition

Vows Made by Women

30 Then Moses said to the heads of the tribes of the Israelites: This is what the Lord has commanded. ² When a man makes 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.

³ When a woman makes a vow to the Lord, or binds herself by a pledge, while within her father’s house, in her youth,