I don't know the Bible very well. I also haven't watched the video yet (but I will!).

But I really like this verse:

Ephesians 6:12 "For we wrestle not against flesh and blood, but against principalities, against powers, against the rulers of the darkness of this world, against spiritual wickedness in high places."

I like it because it's both metaphysical and real; and because it evokes the Warrior spirit.