Noah Webster's Dictionary 1. (n.) Internal or inherent power; capacity of acting, operating, or producing an effect, whether exerted or not; as, men possessing energies may suffer them to lie inactive. 2. (n.) Power efficiently and forcibly exerted; vigorous or effectual operation; as, the energy of a magistrate. 3. (n.) Strength of expression; force of utterance; power to impress the mind and arouse the feelings; life; spirit; -- said of speech, language, words, style; as, a style full of energy. 4. (n.) Capacity for performing work.

Multi-Version Concordance Energy (1 Occurrence) Colossians 1:29 for which I also labor, striving according to his working, which works in me mightily. (See RSV NIV)