A Foundational Bible Study Course Fifty Two Lessons The ability to see into spiritual darkness and positivity discern the presence and identity of demons is invaluable. Demons love darkness because they are darkness. They are completely repelled by light, and God is light! Effective warfare starts with understanding one’s enemy, and spiritual warfare is no exception. Our war with Satan goes beyond our personal battles with him. John said he deceives whole nations. This in-depth Bible course reveals both Satan’s tactics and his weaknesses to give God’s people a much needed advantage in their warfare with him.