Robert, I see your point . I can see how it can be hard to explain your stand on Satanism to your love ones of christian dogma.
However, the impossibility of helping them understand,not converting them, about Satanism; is possible.
I think there are no one method to do so , but a complexity of rational thoughts and communications to deconstruct the mind to the point the mind is able to take facts, experiences, and evidences to see the possibilities of a World without a god or gods.
This can take several years to accomplish with someone. For a person to reach such conditions mentally , will make them god of themselves mentally, it would make them individualized.
It is possible for every human , but for every human , it is impossible.
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"Satan represents man as just another animal, sometimes better, more often worse than
those that walk on all-fours, who, because of his "divine spiritual and intellectual
development", has become the most vicious animal of all!"...Dr. La Vey