What Attitude does Arthur Miller take to the belief in the devil/evil spirits?

In the introduction to Reverend Hale, Arthur Miller describes why he believes, the devil or similar evil spirits have be created and how it has been so easy for people to believe in them. Miller believes that the Christian church created a "hostile" like underworld "hostile" and further used the devil as "a weapon designed... to whip men into a surrender to a particular church or church state," thus increasing the churches power. However, the ideas the church conveyed, of a God representing anything good and the Devil being the ultimate reason behind any wrongdoing is what Miller believes had made it so easy for people to believe in the church. Miller states, "It is as impossible for most men to conceive of a morality without sin as of an earth without sky." In which he explains how, as humans, we look for balance by separating good from bad, and through God and the Devil, humans are able to orginise these good and bad reasonings to a creation source.  "The actions and deeds... society felt comfortable in judging. The secret intent of an action was left to the ministers, priests, and rabbits to deal with." This is further expressed in the play as the leaders claim that witchcraft is what caused the girls to act strangely, the rest of the village is immediately convinced for they do not understand any other reason. So throughout this introduction, Miller is able to convey his attitude to how the christian church successfully brought in the belief of the devil and witchcraft and how society craves and links any moral ideas to that aspect.