Many times we make vows to God especially when under intense pressure and situations that force us to beseech God to come true for us.We quickly forget that God will always come true for us as His children and so when He answers our prayers,we forget knowingly or intentionally to pay that which we vowed to do to Him.
God never takes pleasure in fools who are quick to make vows and can't keep them.Be careful not to fall for that trap.Keep your words and pay that which you have vowed.