4When you make a vow to God, do not delay in fulfilling it, because He takes no pleasure in fools. Fulfill your vow.
5It is better not to vow than to make a vow and not fulfill it.
6Do not let your mouth cause your flesh to sin, and do not tell the messenger that your vow was a mistake. Why should God be angry with your words and destroy the work of your hands?
— Ecclesiastes 5:4-6