And it came to pass the next day, that the evil spirit from God came upon Saul, and he prophesied in the midst of the house: and David played with his hand, as at other times: and there was a javelin in Saul's hand.
All Commentaries on 1 Samuel 18:10 Go To 1 Samuel 18
Cassiodorus Senator
AD 585
It was also through a wicked angel that the transgressor was tempted in the account of the book of Kings [Samuel], where it says “The evil spirit from God came upon Saul.” Just men, too, like Job and the apostle Paul and others of that kind were tried by the devil. It is clear that all created things are subject to the discretion or command of the Creator.