1 Samuel 19:5-9

For he took his life in his hand and struck the Philistine, and the Lord brought about a great victory for all Israel; you saw it and rejoiced. Why then would you sin against innocent blood by putting David to death for no reason?”

Saul listened to the voice of Jonathan, and Saul vowed, “As the Lord lives, David shall not be put to death.”

Then Jonathan called David, and Jonathan told him all these words. And Jonathan brought David to Saul, and he was in his presence as before.

When there was war again, David went out and fought the Philistines and defeated them with great slaughter, so that they fled from him.

Now there was an evil spirit from the Lord on Saul as he was sitting in his house with his spear in his hand, and David was playing the harp with his hand.