I believe this song is about is about Satanism (clearly spelled out in the lyrics) and how druggies and serial murderers are in hell from which "spelled out in the stars his prophecy" lyric comes from, they are in hell after fulfilling Satan's wishes of wasting their life away on drugs and or murdering innocents. Then the 2nd course of the lyrics "The time has come, all the chosen time to put down your bongs, take up a knife end all life" is calling out to people who hasn't fallen under Satan's grip to start doing drugs and kill other humans; in doing so they pledge the evil deeds they do to Lucifer, and even though these people being the new minions of Satan with wasting their life away with drugs and killing, even they won't be saved by Satan and now they the "slaves, your lives weren't saved, die now in the shadow of the pentagram." I think the 3rd part of the song is when it says the chosen few look up in the sky, waiting for the sign, still children of the grave, Satan's slaves how they learn from their mistakes of going into Satan's grip and couldn't fix their life, now they look up in the sky regretting their decisions because they are finally Satan's slaves.