Deuteronomy 23:22-23 (NIV) "But if you refrain from making a vow, you will not be guilty.

Deuteronomy 23:22-23 (NIV) "But if you refrain from making a vow, you will not be guilty.  Whatever your lips utter you must be sure to do, because you made your vow freely to the LORD your God with your own mouth."