I remember I was reading some interview with Mutiilation or Belketre or some other Black Legions band, and they constantly talked about how much they hated humans, life, how great the universe would be if it was completely devoid of life, and other similar sentiments. This attitude is pretty prevalent in black metal now, it seems. It's extreme, evil, misanthropic, what have you, and doesn't require much in the way of articulation. If you just want to look "necro", it's pretty easy when the basis for your ideology is "Kill All Life". There's no need to go too in depth when you can just rant about how much you hate everyone.
Then, I saw a quote today which I remembered reading when glancing through that unfortunate book they made me read in grade school: The Bible.
According to the book that Christians hold to be holy, Jesus Christ, the Nazarene, the schizophrenic with a God-complex who turned the world topsy-turvy by declaring that it should adhere to the principles of Opposite Day, said the following before a bunch of Jews had him nailed to a a cross:
"If any man come to me, and hate not his father, and mother, and wife, and children, and brethren, and sisters, yea, and his own life also, he cannot be my disciple."