Ecclesiastes 5:4-6

Darby Translation

⁴ When thou vowest a vow unto God, defer not to pay it; for he hath no pleasure in fools: pay that which thou hast vowed.

⁵ Better is it that thou shouldest not vow, than that thou shouldest vow and not pay.

⁶ Suffer not thy mouth to cause thy flesh to sin; neither say thou before the angel, that it was an inadvertence. Wherefore should God be wroth at thy voice, and destroy the work of thy hands?