Your resources are spiritual (and eternal)
You can’t fight a spiritual battle with worldly weapons. You have to use God’s weapons.
We are human, but we don’t wage war as humans do. We use God’s mighty weapons, not worldly weapons, to knock down the strongholds of human reasoning and to destroy false arguments. We destroy every proud obstacle that keeps people from knowing God. We capture their rebellious thoughts and teach them to obey Christ. (2 Corinthians 10:3-5)