1 Samuel 19:4-10 (KJV)
4 And Jonathan spake good of David unto Saul his father, and said unto him, Let not the king sin against his servant, against David; because he hath not sinned against thee, and because his works have been to thee-ward very good:
5 For he did put his life in his hand, and slew the Philistine, and the LORD wrought a great salvation for all Israel: thou sawest it, and didst rejoice: wherefore then wilt thou sin against innocent blood, to slay David without a cause?
6 And Saul hearkened unto the voice of Jonathan: and Saul sware, As the LORD liveth, he shall not be slain.
7 And Jonathan called David, and Jonathan shewed him all those things. And Jonathan brought David to Saul, and he was in his presence, as in times past.
8 And there was war again: and David went out, and fought with the Philistines, and slew them with a great slaughter; and they fled from him.
9 And the evil spirit from the LORD was upon Saul, as he sat in his house with his javelin in his hand: and David played with his hand.
10 And Saul sought to smite David even to the wall with the javelin; but he slipped away out of Saul’s presence, and he smote the javelin into the wall: and David fled, and escaped that night.