But if you abstain from vowing, it shall not be sin to you.
Deuteronomy 23:22
Surrounding context
23:21 "When you make a vow to the LORD your God, you shall not delay to pay it; for the LORD your God will surely require it of you, and it would be sin to you.
23:22 But if you abstain from vowing, it shall not be sin to you.
23:23 That which has gone from your lips you shall keep and perform, for you voluntarily vowed to the LORD your God what you have promised with your mouth.