Then answered one of the young men, and said, Behold, I have seen a son of Jesse the Bethlehemite, who is skillful in playing, and a mighty man of valor, and a man of war, and prudent in speech, and a comely person; and Yahweh is with him.
Initially Saul loved David greatly, as Jonathan did (cf. 1 Samuel 18:1; 1 Samuel 18:3; 1 Samuel 20:17). However, Saul’s attitude would change. The king appointed an armor-bearer to that position because of his courage, his ability to handle weapons, and his ability to get along with the king. David was probably a teenager at this time since he was 30 when he began to reign (2 Samuel 5:4). He was not Saul’s bodyguard. He just helped the king handle his armor. Whatever kind of spirit afflicted Saul, David’s sweet music reduced its ill effects. Saul was becoming dependent on the one who would replace him.