Ecclesiastes 5

4 When you make a vow to God, with a curse on you if you don’t keep it,*5:4. "With a curse on you if you don’t keep it," implied. Frequently vows to God included a curse for failing to keep the vow. don’t be slow in keeping it, for he is not happy with foolish behavior. So do what you promised! 5 Better not to make any vows at all than to make a vow you don’t keep.