Those of us who believe in Christ are in him presently. But just as the Israelites entered the land and had battles to fight, so do we. Not the Amorites, the Hittites, the Perizzites, the Canaanites, the Hivites or the Jebusites. The New Testament advocates engaging in no battles against any human foe. Before we consider our part in spiritual warfare, we need to consider God's part.
Demons operate best in the dark, in hidden places where they go undetected.
Not knowing the future, we may be inclined to fear it. Demons themselves would promote that fear. When we move forward into the future, the Lord is there already. We therefore need not fear the future. Demons would not only inspire fear, they would inspire terror.