1 Kings 22:47

No king in Edom. There has been no reference to the condition of Edom since the time of Solomon, when Hadad, having returned thither from Egypt was “an adversary unto Solomon” (ch. 11:14). It appears, however, that Edom had again been reduced to dependency, perhaps by Asa or Jehoshaphat, and was ruled by a deputy or viceroy, who, however, was allowed no royal title (see 2 Kings 3:9, 12, 26).