2 Kings 8:19-21

Amplified Bible

¹⁹ Yet for the sake of His servant David the Lord was not willing to destroy Judah, since He had promised to give him a lamp (enthroned descendant) through his sons always.

²⁰ In his days Edom revolted from the rule of Judah, and set up a king over themselves. ²¹ So Jehoram [king of Judah] went over to Zair [in Edom] with all his chariots. He set out by night and struck down the Edomites who had surrounded him and the captains of his chariots; but the people [of his army] fled to their tents.