Do not let your mouth cause your flesh to sin, and do not tell the messenger that your vow was a mistake. Why should God be angry with your words and destroy the work of your hands?
Jewish Publication Society of America Version (JPS1917) - Ecclesiastes 5:6 >(5-5) Suffer not thy mouth to bring thy flesh into guilt, neither say thou before the messenger, that it was an error; wherefore should God be angry at thy voice, and destroy the work of thy hands?