Anointed David king - He was anointed before by Samuel, by which he acquired jus ad regnum, a right To the kingdom; by the present anointing he had jus in regno, authority Over the kingdom. The other parts of the kingdom were, as yet, attached to the family of Saul.
David had already been anointed by Samuel 1 Samuel 16:13. His first anointing indicated God‘s secret purpose, his second the accomplishment of that purpose. (Compare the case of Saul, 1 Samuel 10:1; 1 Samuel 11:14.) David was anointed again king over Israel 2 Samuel 5:3. The interval between the anointing of the Lord Jesus as the Christ of God, and His taking to Himself His kingdom and glory, seems to be thus typified.