Ecclesiastes 5:4-7
4. When you make a vow to God, do not delay in fulfilling it. He has no pleasure
in fools; fulfill your vow.
5. It is better not to vow than to make a vow and not fulfill it.
6. Do not let your mouth lead you into sin. And do not protest to the [temple]
messenger, "My vow was a mistake." Why should God be angry at what you say and
destroy the work of your hands?
7. Much dreaming and many words are meaningless. Therefore stand in awe of God.