1 Samuel 19:4

1Saul spoke to Jonathan his son and to all his servants, that they should kill David. But Jonathan, Saul’s son, greatly delighted in David.

2Jonathan told David, saying, “Saul my father seeks to kill you. Now therefore, please take care of yourself in the morning, live in a secret place, and hide yourself.

3I will go out and stand beside my father in the field where you are, and I will talk with my father about you; and if I see anything, I will tell you.”

4Jonathan spoke good of David to Saul his father, and said to him, “Don’t let the king sin against his servant, against David; because he has not sinned against you, and because his works have been very good toward you;

5for he put his life in his hand and struck the Philistine, and the LORD worked a great victory for all Israel. You saw it and rejoiced. Why then will you sin against innocent blood, to kill David without a cause?”

6Saul listened to the voice of Jonathan; and Saul swore, “As the LORD lives, he shall not be put to death.”

7Jonathan called David, and Jonathan showed him all those things. Then Jonathan brought David to Saul, and he was in his presence as before.

8There was war again. David went out and fought with the Philistines, and killed them with a great slaughter; and they fled before him.