Deuteronomy 23:21-23

Revised Geneva Translation

²¹ “When you shall vow a vow to the LORD your God, you shall not be slow to pay it. For the LORD your God will surely require it of you. And so it would be sin to you.

²² “But when you abstain from vowing, it shall be no sin to you.

²³ “That which has gone out of your lips you shall keep and perform, as you have vowed it willingly to the LORD your God. You have spoken it with your mouth.