The devil is credited for sooo much in this world by Christians.
Things that can't be explained with the Bible or contradict it are the works of the devil. All the bad things come down to the devil.
The devil seems to have hand in about everything. Not even gods houses are safe since even priests have been tempted by the devil.
But the devil was for some reason not able to do anything with the Bible. Why is that? Why can't some passages be from the devils hand instead of gods? Tricking people in doing wrong things?