19. Became his servants. This is probably the victory by which David extended his power to the Euphrates ( 18:3). The formidable alliance against him had threatened his kingdom with utter destruction. But with the help of the Lord he gained a victory that raised his kingdom to unprecedented greatness. This does not mean that the territory of Israel proper extended to the Euphrates (see The Empire of David and Solomon), but that David’s sphere of influence extended to this region.