1 Samuel 19:8

for 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?”

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

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

An evil spirit from the LORD was on Saul as he sat in his house with his spear in his hand; and David was playing music with his hand.

Saul sought to pin David to the wall with the spear, but he slipped away out of Saul’s presence; and he stuck the spear into the wall. David fled and escaped that night.

Saul sent messengers to David’s house to watch him and to kill him in the morning. Michal, David’s wife, told him, saying, “If you don’t save your life tonight, tomorrow you will be killed.”