Ecclesiastes 5
4 Ref When thou vowest a vow to God, delay not to complete it, for there is no pleasure in fools; that which thou vowest -- complete.
5 Ref Better that thou do not vow, than that thou dost vow and dost not complete.
6 Ref Suffer not thy mouth to cause thy flesh to sin, nor say before the messenger, that `it `is' an error,' why is God wroth because of thy voice, and hath destroyed the work of thy hands?