1 Samuel 18:6-10

Now it happened as they were coming, when David returned from killing the Philistine, that the women came out of all the cities of Israel, singing and dancing, to meet King Saul, with tambourines, with joy and with other musical instruments.

The women sang as they played, and said, “Saul has slain his thousands, And David his ten thousands.”

Then Saul became very angry, for this lyric displeased him; and he said, “They have given David credit for ten thousands, but to me they have given credit for only thousands! Now what more can he have but the kingdom?”

And Saul eyed David with suspicion from that day on. Saul Turns against David

Now it came about on the next day that an evil spirit from God rushed upon Saul, and he raved in the midst of the house while David was playing the harp with his hand, as usual; and a spear was in Saul’s hand.