Jonathan (jŏnˈəthən) [key] [short for Jehonathan, Heb., = Yahweh has given]. 1 In the Bible, Saul's son and David's friend, killed at the battle of Mt. Gilboa. David showed kindness to his son Mephibosheth. 2 David's nephew. He is perhaps the same man who is called David's uncle and counsellor in the translations of First Chronicles. 3 One of the Maccabees. He was appointed high priest by Alexander Balas, pretender to the Syrian throne.