Deuteronomy 23:21-23

Expanded Bible

²¹ If you make a ·promise [vow] to give ·something [a vow] to the Lord your God [Lev. 7:16–17; Num. 30:2–17], do not ·be slow [delay] to pay it, because the Lord your God ·demands [will surely seek] it from you. Do not be guilty of sin. ²² But if you do not make the ·promise [vow], you will not be guilty. ²³ You must do whatever ·you say you will do [^Lcomes out of your lips], because you ·chose to make [^Lfreely made with your own mouth] the ·promise [vow] to the Lord your God [Eccl. 5:4–5].