JEHONADAB or JONADAB. 1. Son of Shimeah, David’s brother, and the friend of Amnon the son of David. He is described as ‘a very subtil man.’ He aided Amnon to carry out his intrigue against his half-sister Tamar ( 2 Samuel 13:3 ff.), and after the assassination of Amnon was the first to grasp the true state of affairs, and to allay the king’s distress by his prompt report of the safety of the royal princes ( 2 Samuel 13:30 ff.). 2. Son of Rechab, of the clan of the Kenites ( 1 Chronicles 2:55 ), and formulator of the rules imposed upon descendants, the Rechabites ( Jeremiah 35:1-19; see Rechabites). Jehonadab was thoroughly in sympathy with the measures adopted by Jehu for the vindication of the religion of J″ [Note: Jahweh.] ( 2 Kings 10:15; 2 Kings 10:23 ).