I will speak, ¹  so that I may find relief; I will open my lips, so that I may answer.

He says, “I will build myself a large palace with spacious upper rooms.” He cuts windows in its walls, panels it ¹  with cedar, and paints its rooms red. ² 

So whenever the spirit from God would come upon Saul, David would take his lyre and play it. This would bring relief to Saul and make him feel better. Then the evil spirit would leave him alone. ¹