Ecclesiastes 5:4-7

When you make a vow to God, do not delay to pay it; For He has no pleasure in fools. Pay what you have vowed— Better not to vow than to vow and not pay. Do not let your mouth cause your flesh to sin, nor say before the messenger of God that it was an error. Why should God be angry at your excuse and destroy the work of your hands? For in the multitude of dreams and many words there is also vanity. But fear God.