It's a Spiritual Battle

The Christian has a tendency to do one of two things: they either over-spiritualize everything, or under-spiritualize. While you must be careful not to attribute normal parts of living in a physical world to demonic activity, you must also be aware of the events that are likely orchestrated by our adversary — Satan. The entity of Satan exists in both the Old and New Testament, always as someone who opposes God’s people. Being not just aware but prepared for his attacks is paramount for healthy Christian living.