Matthew Henry on 1 Chronicles 11:1-9
David is here brought to the possession.
I. Of the throne of Israel, after he had reigned seven years in Hebron, over Judah only. In consideration of his relation to them (Ch1 11:1), his former good services, and especially the divine designation (Ch1 11:2), they anointed him their king: he covenanted to protect them, and they to bear faith and true allegiance to him, Ch1 11:3. Observe, 1. God's counsels will be fulfilled at last, whatever difficulties lie in the way. If God had said, David shall rule, it is in vain to oppose it. 2. Men that have long stood in their own light, when they have long wearied themselves with their lying vanities, it is to be hoped, will understand the things that…
Read the whole note in the consoleJamieson-Fausset-Brown on 1 Chronicles 11:8
Joab repaired the rest of the city--David built a new town to the north of the old one on Mount Zion; but Joab was charged with a commission to restore the part that had been occupied by the ancient Jebus, to repair the breaches made during the siege, to rebuild the houses which had been demolished or burned in the sacking of the town, and to preserve all that had escaped the violence of the soldiery. This work of reconstruction is not noticed elsewhere [CALMET].
Adam Clarke on 1 Chronicles 11:1
Then all Israel gathered themselves to David - See Sa2 5:1-10 (note), for the history contained in the first nine verses of this chapter, and the notes there.
Tyndale Open Study Notes on 1 Chronicles 11:4-9
David’s conquest and rebuilding of Jerusalem established it as the capital city of his reign over all Israel.
Rashi on 1 Chronicles 11:8
and Joab restored the rest of the city Heb. יְחַיֶּה. He built and strengthened [it] by building [i.e., repairing] the cracks in the wall. A similar instance [is found] with Ezra (Neh. 3:34): “Will they revive (הַיְּחַיּוּ) the stones from the heaps of dust?”