1 Corinthians 14:14 (a) It represents a mind that is educated, but not along lines that will produce good results. It indicates a zeal that is not supported by knowledge.
Ephesians 5:11 (a) By this we understand works which produce no good results for GOD. These are activities which do not result in spiritual blessings. Usually it is religious works which have no spiritual significance, and produce no value in the soul.