David was anointed thrice: by Samuel in his home, by the men of Judah, and here. So our Lord has been crowned in the Father's purpose and by his Church. There awaits another day, when he will be recognized as King by the entire universe, Revelation 11:15, etc. The reasons for David's coronation apply equally to our Lord: (1) kinship; (2) power to lead; (3) God's eternal purpose.
Because of its impregnable position, it was wise policy to secure Jerusalem as the site of the capital. Here was the beginning of new prosperity for Israel, and for Jerusalem as well, which was now to become "the joy of the whole earth." See 1 Chronicles 12:23, etc. David's influence increased by leaps and bounds, 2 Samuel 5:10. There broke on his mind a perception of the divine purpose, 2 Samuel 5:12. Often we are unable to descry this in the earlier stages of our life. We see no meaning, no purpose. But as year is added to year, God's great scheme begins to unfold. Only be sure that any position or opportunity is intended, not for us alone, but for his people's sake. [source]
Chapter Summary: 2 Samuel 5
1The tribes come to Hebron and anoint David over Israel, 4David's age 6Taking Zion from the Jebusites, he dwells in it 11Hiram sends to David, 13Eleven sons are born to him in Jerusalem 17David, directed by God, smites the Philistines at Baal-perazim 22And again at the mulberry trees
What do the individual words in 2 Samuel 5:4 mean?
OldthirtyyearsDavid [was]when he began to reignforty[and] he reigned