One of the first things David did as king was to capture the city of Jerusalem. Simultaneously, he dispossess the Jebusites from this mountain fortress upon Zion. The citadel of Jerusalem became known as the City of David because it became his personal royal possession.
The move from Hebron to Jerusalem gave David a military and political advantage. The site was strategically located, easy to defend, and had no strong political association with the northern or southern tribes (see 1 Chr. 12:23–40).
David’s capture, expansion, and occupation of Jerusalem made it clear to all Israel and to surrounding peoples as well that God … was with him.
David earned the respect and the attention from Hiram, king of the Phoenician city-state of Tyre, who provided materials and men to build David a palace (1 Kings 5:1–11). Recognition by a person of such stature convinced David that God indeed had established him and exalted his kingdom.
The triumphs of David are no better illustrated than in his victories over Israel’s archenemies, the Philistines. Unlike Saul, who failed against the Philistines, David succeeded because he was careful to follow the word of the Lord.