For Christians to claim Christians cannot have demons simply because they are Born Again is like saying their car cannot break down simply because they are Born Again, or even sillier, that they don’t have to fill their gas tank or change the oil or refill the oil if it is low because they are Born Again, or that they are free from the Law of Gravity because they are a Born Again Christian. That’s all mysticism, which is naturalizing the spiritual and/or spiritualizing the natural.