Ecclesiastes 5:4-7

If you make a promise to God, don’t be slow to keep it. God is not happy with fools, so give God what you promised. It is better not to promise anything than to promise something and not do it. Don’t let your words cause you to sin, and don’t say to the priest at the Temple, “I didn’t mean what I promised.” If you do, God will become angry with your words and will destroy everything you have worked for. Many useless promises are like so many dreams; they mean nothing. You should respect God.