“All those who were in distress or in debt or discontented gathered around him, and he became their leader” (1Sa 22:2).
Here is the beginning of David’s new flock — these were the “sheep” he was to protect from the beasts of prey!
In the fulfillment of this Old Testament type, the New Testament finds he poor of this world, “rich in faith”, being called to follow the LORD’s anointed (1Co 1:26-29).
“Come to me, all you who are weary and burdened, and I will give you rest” (Mat 11:28,29).
And they came,
“outside the camp, bearing the disgrace he bore” (Heb 13:13).
“What we know of David in this context, is that his family heritage via a Canaanite and Moabite, had quite an impact on his view of God’s plan for Jew and Gentile. He seemed to appreciate better than any before or after, the full import of the promise,
‘in your seed shall ALL nations be blessed.’
His appreciation of his elevation to kingship over ALL Israel was shown by his conquest of Jerusalem and the realization that he was its first believing king since Melchizedek. David’s proselytizing of Gentiles is quite extraordinary and his second visit to Goliath’s home town resulted in quite a crop of faithful adherents to the Covenant. It also explains his building of a tabernacle in Jerusalem with the ark as its only piece of furniture and why James later (Acts 15) speaks of the rebuilding of the tabernacle of David (Amos 9) as being an indication of God’s call to and purpose with Gentiles” (Ken Chalmers).