The doctrine of Ecclesia Luciferi was created for the benefit of some, for those who dare to abandon faith, hope and love for delusion and who fearlessly confront the unforgiving, morally indifferent, brutal truth about the true nature of things.
So that the Satanist, having rejected belief in imaginary gods, will believe in the divinity of the reason of the human animal, and in the abundant, godless life before death, and that, knowing it to be the inevitable end, he will have eternal peace after death, united forever with the power of the Infinite, the only godless reality that exists.
Or even more succinctly:
That man may so love the godless world that he may reject the belief in delusion which takes away the power of the divinity of human reason, and that he may not become a slave to the fear of hell, but have a godless life abundant before eternity in the peace of death.
"There is no god but Satan, whose image arises and visualises itself in my own mind, every day more and more, who is the symbol of the eternal, unchanging and indifferent laws of fallen nature, who symbolises mortal life in flesh and blood and eternal death that gives eternal peace. There are no messiahs and prophets above myself, whose intelligence leads me to recognise the true nature of things. There are no gods. There is nothing there!" Godless Satanism Doctrine