In the time of Solomon, Hadad 1 Kings 11:14, according to the Septuagint, “reigned over Edom.” It appears by the present passage that the country had been again reduced either by Jehoshaphat, or by an earlier king, and was dependent on the kingdom of Judah, being governed by a “deputy” or viceroy, who, however, was allowed the royal title (compare 2 Kings 3:9, 2 Kings 3:12, 2 Kings 3:26). This government of dependencies by means of subject-kings was the all but universal practice in the East down to the time of Cyrus (the 1 Kings 4:21 note).
Related Commentaries of 1 Kings 22:47
1 Kings 22:47
47 There was then no king in Edom: a deputy was king.