Ecclesiastes 5:2-6

²Speak thou not anything follily (or Do not thou say anything foolish), neither (let) thine heart be swift to bring forth a word before God; for God is in heaven, and thou art on earth, therefore (let) thy words be few.

³Dreams follow many busynesses, and folly shall be found in many words.

⁴If thou hast avowed anything to God, tarry thou not to yield it; for an unfaithful and fond promise displeaseth him; but yield thou whatever thing thou hast avowed;

⁵and it is much better to make not a vow, than after a vow to yield not the promises. (and it is much better to not make a vow, than to make a vow and then not yield the promises.)

⁶Give thou not thy mouth, that thou make thy flesh to do sin; neither say thou before an angel, No purveyance there is; lest peradventure the Lord be wroth on thy words, and destroy all the works of thine hands. (Give thou not thy mouth, that thou make thy flesh to do sin; nor then say thou before an angel, This is but a mistake; lest perhaps the Lord be angry with thy words, and destroy all the works of thy hands.)