1 Samuel 16:23

So it came about that whenever the [evil] spirit from God was on Saul, David took a harp and played it with his hand; so Saul would be refreshed and be well, and the evil spirit would leave him.

1 Samuel 16:14-16

Now the Spirit of the Lord departed from Saul, and an evil spirit from the Lord tormented and terrified him.

Now it came about on the next day that an evil spirit from God came forcefully on Saul, and he raved [madly] inside his house, while David was playing the harp with his hand, as usual; and there was a spear in Saul’s hand.

Matthew 12:43-45

“Now when the unclean spirit has gone out of a man, it roams through waterless (dry, arid) places in search of rest, but it does not find it.

Luke 11:24-26

“When the unclean spirit comes out of a person, it roams through waterless places in search [of a place] of rest; and not finding any, it says, ‘I will go back to my house (person) from which I came.’

Treasury of Scripture Knowledge

Summary

1 Samuel 16:23

And it came to pass, when the evil spirit from God was upon Saul, that David took an harp, and played with his hand: so Saul was refreshed, and was well, and the evil spirit departed from him.