The concept of heaven and hell plays a part in the soul bindings that xianity places upon people.
I know someone will probably come to tell me that the terminology is stolen from somewhere as is the case with almost all of the enemy's programs using stolen knowledge and corrupting terms to create these soul-binding programs.
When referencing "hell" generally speaking this is more or less just to describe where the gods reside rather than to say that the gods exist in some pit of fire. Since most people, coming from a xian background automatically associate the term hell with the daemons. The Joy of Satan, is all about Satan, and since a majority of people associate Satan with hell, the term is widely used just so people know what we're talking about. I too think people should use Duat instead of the terms heaven or hell.
The duality presented in the xian program is that upon death one either enters hell or heaven, and there are strict, lifelong procedures and "values" one must adhere by to gain entry into "heaven".
I've been researching and analyzing xianity from an occult and magickal perspective and I'll post my conclusions at some point. But the general overview of it is that "going to hell" is to be rejected by YHWH and having your soul left at the mercy of Satan. Of course as far as xianity is concerned, this is explained to be the worst possible outcome as they slander Satan to be the ultimate evil, to make one fear this and instead bind their soul to YHWH.
Curiously enough the xian process to "enter heaven" is very much real. It's simply not what people expect. You see, the lifetime commitment of binding one's soul to YHWH with absolute loyalty and faith, and programming one's mind and soul to fully commit to this "heaven" where one becomes "one with god", stripping all the sugar coating and dramatization, xianity is a lifelong ritual in which one binds oneself to this entity and is ultimately consumed by it.
This is what it means to "become one with god" and "enter heaven". Xianity is a cult in which people willingly bind themselves and offer up their own souls to be consumed by a "god" that is itself bound to serve the jews. The process of cleansing oneself of sin is a deceptive procedure of stripping away all that makes one individual, and the prayers and rituals employed will disarm one spiritually and make one totally vulnerable, and both unwilling and incapable of defending oneself.
Culminating in the total surrender of one's soul into the mercy of "god", which of course has no mercy and consumes one's soul like livestock. As xians are essentially people who reduce themselves to livestock to be consumed by and power the YHWH thoughtform.
"Vampirism" refined to absolute perfection. As it is a program that convinces prey to surrender themselves to be willingly consumed.
Myself personally I just view the two terms as totally obsolete regardless of their origin at this point, and I find discussion around what they mean, could have meant, or used to mean before being stolen as rather pointless and even confusing to some people.
Discussion around these always end up just coming down to personal interpretations and little of value is ever gained from arguing these things back and forth. To me, "heaven & hell" are just words used in the xian cult that have little if any meaning outside of it.