Then he put garrisons in Edom; throughout all Edom he put garrisons, and all the Edomites became David’s servants. And the LORD gave victory to David wherever he went.
Here is, 1. The court made to David by the king of Hamath, who, it seems was at this time at war with the king of Zobah. He hearing of David's success against his enemy, sent his own son ambassador to him (Sa2 8:9, Sa2 8:10), to congratulate him on his victory, to return him thanks for the favour he had done him in breaking...
Commenting on 2 Samuel 8:9-14
And he put garrisons in Edom,.... To keep the inhabitants in subjection to him; as their forts and strong holds came into his hands, he placed companies of soldiers in them for the said purpose; or governors, as the Targum, men of his own nation, into whose hands he put their principal cities, who governed them for him, and under him.
He put garrisons in Edom - He repaired the strong cities which he had taken, and put garrisons in them to keep the country in awe.