The Greek word “diegeomai”

Limited to Mk. 5:16; 9:9; Lk. 8:39; 9:10; Acts 8:33; 9:27; 12:17; Heb. 11:32, the Greek verb “diegeomai” meant “recount” or “tell in full.”  “Witnesses tell what happened to a demoniac (Mk. 5:16); the apostles tell Jesus what they have done (Lk. 9:10; cf. Mk. 9:9; Acts 8:33; 9:27; 12:17; Heb. 11:32).  The demoniac who is cured is to declare how much God has done for him (Lk. 8:39).  Once (Acts 8:33) the word occurs in a quotation of the LXX of Isa. 53:8, to mean declare or describe” (Dictionary of New Testament Theology, 1:576).