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. (1 Samuel 16:23)
Literally, “Saul breathed.” The word ruach means “to breathe,”“to blow,” especially with the nostrils. The use of this verb implies a strong, forced exhalation of breath such as often accompanies relaxation after a period of tension, followed by normal breathing. The fits of demon possession Saul suffered were apparently accompanied by physical and nervous tenseness.