Proverbs 20:25

It is a snare to the man who devoureth that which is holy, and after vows to make enquiry.

It is a trap to devour what is holy by treating as expendable or as one's own what has been consecrated and set apart for God. To make enquiry after vows is afterward to reconsider and question the pledge, inquiring how to avoid fulfilling it and seeking to withdraw from it. A pledge made to God is sacred and must be kept, so to take back or withhold what was promised, especially what was promised for His work, brings guilt and is a serious offense.