Reminds me of my father's basement.
Christianity, for the most part, is a death cult that idolizes life after death far more so than it does the life that we are living currently. You're essentially only living this life for the next one, a "better" one or a potentially horrific one.
It should not surprise anyone that much of their art is focused around the theme of dead people. Apocalypse, the end of the world and all of mankind is the ultimate objective of Christianity.