1 Samuel 18:5-16; 1 Samuel 18:29-30
Whatever Saul sent him to do, David did it so successfully that Saul gave him a high rank in the army. This pleased all the people, and Saul's officers as well.
When the men were returning home after David had killed the Philistine, the women came out from all the towns of Israel to meet King Saul with singing and dancing, with joyful songs and with tambourines and lutes.
As they danced, they sang: "Saul has slain his thousands, and David his tens of thousands."
Saul was very angry; this refrain galled him. "They have credited David with tens of thousands," he thought, "but me with only thousands. What more can he get but the kingdom?"
And from that time on Saul kept a jealous eye on David.
The next day an evil spirit from God came forcefully upon Saul. He was prophesying in his house, while David was playing the harp, as he usually did. Saul had a spear in his hand
and he hurled it, saying to himself, "I'll pin David to the wall." But David eluded him twice.
Saul was afraid of David, because the LORD was with David but had left Saul.
So he sent David away from him and gave him command over a thousand men, and David led the troops in their campaigns.
In everything he did he had great success, because the LORD was with him.
When Saul saw how successful he was, he was afraid of him.
But all Israel and Judah loved David, because he led them in their campaigns.
Saul became still more afraid of him, and he remained his enemy the rest of his days.
The Philistine commanders continued to go out to battle, and as often as they did, David met with more success than the rest of Saul's officers, and his name became well known.