“In times past, when Saul was king over us, it was you who led out and brought in Israel. And the Lord said to you, ‘You shall be shepherd of my people Israel, and you shall be prince over Israel.’” – 2 Samuel 5:2
David united the divided kingdom under one sovereign. In doing so he fulfilled his prophetic calling. The first part of the verse references David’s past military conquests and demonstrates God’s great power over his elect and those who wish to do them harm. In Israel’s great military successes, the nearly unexplainable victories over their enemies foreshadow the true king who will provide eternal salvation for his elect under even greater odds.
Like Christ, David was not put in place to advance his personal agenda. Both Christ and his forefather, David, were called forth to bring God’s elect closer to the Lord. John Wesley said, “This expression he useth to admonish David, that he was not made a king to advance his own glory, but for the good of his people; whom he ought to rule with all tenderness, and to watch over with all diligence.” King David was not a king after God’s own heart, because he was a great warrior. David was a prolific king because God empowered him to advance the elect of the Lord.
As David’s military might pointed forward to Christ’s merciful salvation, so too does our earthly works point toward the glory of Jesus Christ. David was not chosen by God because he had military might, he had military might because he was chosen by God. Disciples of Christ will also find great success due to the might of the one they have been called to serve.
Any missionary, evangelist, or pastor who reaps a great harvest from his actions does so because the Lord has prepared the soil, and brought forth great reward. No matter what earthly abilities and skills we possess, we succeed in calling the lost home, only because of the perfect will of the one who calls us to labor. Go forward in humility and confidence knowing the one who prepared you for battle also empowered you for victory.
 John Wesley, Explanatory Notes upon the Old Testament, vol. 2 (Bristol: William Pine, 1765), 1009.