Instrument in'-stroo-ment (keli; in Greek plural hopla, Romans 6:13): The word in the Old Testament is used for utensils for service, chiefly in connection with the sanctuary (compare Exodus 25:9, Numbers 4:12, Numbers 4:26, Numbers 4:32, 1 Kings 19:21, 1 Chronicles 9:29, 2 Chronicles 4:16, the King James Version); for weapons of war (1 Samuel 8:12, 1 Chronicles 12:33, 1 Chronicles 12:17, etc.); notably for musical instruments. See MUSIC. The members of the body are described by Paul (Romans 6:13) as "instruments" to be used in the service of righteousness, as before they were in the service of unrighteousness.