Ecclesiastes 5:2-7

MLV(i) 2 Do not be rash with your mouth and do not let your heart be hasty to utter anything before God. Because God is in heaven and you upon earth. Therefore let your words be few. 3 Because a dream comes the greatness of the task and a fool's voice with a multitude of words.
4 When you vow a vow to God, defer not to pay it, because he has no pleasure in fools. Pay what you vow. 5 It is better that you should not vow, than that you should vow and not pay. 6 Do not allow your mouth to cause your flesh to sin, nor say before the messenger, that it was an error. Why should God be angry at your voice and destroy the work of your hands? 7 Because there are vanities in the multitude of dreams and in many words. But fear God.