1 Samuel 19:4, 5, 15

Jonathan spoke well of David to Saul his father and said to him, “Let not the king do wrong to his servant David; he has not wronged you, and what he has done has benefited you greatly.

He took his life in his hands when he killed the Philistine. The LORD won a great victory for all Israel, and you saw it and were glad. Why then would you do wrong to an innocent man like David by killing him for no reason?”

Then Saul sent the men back to see David and told them, “Bring him up to me in his bed so that I may kill him.”