Hadadezer, Hadarezer [Hădăd ē'zûr, Hăd är ē'zûr]—mighty is the help, hadar is a help or beauty of assistance. The son of Rehob, and king of Zobah in Syria who was defeated by David and driven across the Euphrates (2 Sam. 8:3-12; 1 Kings 11:23). Called Hadarezer in 1 Chronicles 18:8 and 19:16, 19).