If you're a total n00000b. You should prolly check out Vader, Bolt Thrower, Cancer blablablabla. They're all better than Deicide imo even if they are still super repetitive.
Vital Remains is what you want then. Get Dechristianize right now.
http://www.youtube.com/watch?v=SDz5eKNX7J8
The illest melody ever hits around 2:45.
Fuckin BRUTAL!!!
Hell yeah. The whole album is pretty much like that. Brutal death with lots of blasting and blasphemous lyrics with ill sweeping thrown in. You should definitely check it out.