To be anointed is to be set apart for service. It represents the empowerment of the Lord (see Isaiah 61:1; Zechariah 4:14) for a particular task.1 The oil used in the anointing was most likely a sacred oil made of several different ingredients (Exodus 30:23–25).2 Anointing involved pouring oil over a person's head (see 1 Samuel 10:1). In relation to Israel’s kings, it signified a contract whereby the Lord not only recognized but also obligated himself to help and support the king.3 David’s official anointing and recognition as king before the people will take place only after the death of Saul (2 Samuel 2:4; 2 Samuel 5:3).4
13 Then Samuel took the horn of oil and anointed him in the midst of his brothers. And the Spirit of the LORD rushed upon David from that day forward. And Samuel rose up and went to Ramah.