Look at the names of the tracks, seems to be telling the biblical story, a battle of good vs evil. Lots of symbolism, having studied the occult, the symbols used here seem to err more on the side of mocking the evil ones and their symbolism when you consider the accompanying stories and track titles.
Track titles from Vol 1:
The Beginning
Sword of Truth
The Way Home (IMO Jesus)
Kill Them All (the evil ones? Could be referring to when they tried to kill all the male babies in hopes of preventing Jesus arrival)
In the Face of Evil
Only Way In (again I think referring to belief in Jesus as in only way into Heaven)
Reflection (Mirror)
Retrogram
Discover
Memories in Shadow
Battlefield (Revelation?)
Infinite
Journey's End