 Or one of the passages we looked at for the reading this morning. Numbers chapter 30 verse 2. 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 from his mouth. Deuteronomy chapter 23 verse 21. If you make a vow to the Lord your God you shall not delay fulfilling it. For the Lord your God will surely require it of you. And you will be guilty of sin.