1 Samuel 19:9

Now the Spirit of Yahweh departed from Saul, and an evil spirit from Yahweh terrorized him.

“Let our lord now speak to your servants who are before you. Let them seek a man who is a skillful musician on the harp; and it shall be that when the evil spirit from God is on you, he shall play the harp with his hand, and you will be well.”

Now it happened on the next day that an evil spirit from God came mightily upon Saul, and he raved in the midst of the house. Now David was playing the harp with his hand, as usual; and a spear was in Saul’s hand.

“And Yahweh said to him, ‘How?’ And he said, ‘I will go out and be a lying spirit in the mouth of all his prophets.’ Then He said, ‘You shall entice him and also prevail. Go out and do so.’