Now, before I continue I would like to be clear that this is my interpretation of a belief. I have came to this conclusion through study and collaboration with others of same or differing beliefs.
I've seen many of you ask in these forums how to summon and then sell your soul to the Devil. Many of you ask this for various reasons. Whether it be to learn a skill or fix a mistake. Now many people have limited knowledge on the topic of "The Devil" and most usually mean Lucifer, or have the idea of Lucifer in mind while claiming the terms "Devil" or "Satan". Just this misconception alone can cause one to have doubts in their practice. After much study and meditation, I have come to the conclusion that you cannot sell your soul to Lucifer.
Now I know what most of you are thinking by now. "What do you mean, of course you sell your soul to him?" And my simple answer is that you cannot, he is merely not interested nor does he require your souls.
In the Christian belief, the Bible makes no reference to selling one's soul or even bargaining it with "Satan". Looking further into it, I cannot find one religious text, that is set in Western Christian beliefs, where I can find an example of this. Also, even though some personal interpretations from the LaVeyan bible can hint at selling one's soul, it is widely speculated that LaVeyan Satanism is mostly non-theistic. This of course means that they adhere to Lucifer and Satan as symbols for human nature, and not divine deities, meaning that it wouldn't be possible to sell your soul to them. In fact the idea of selling your soul to Satan can more than likely be accredited to literature, music, and modern day "Hollywoodism" (I will be coining that term).
Second, you have to ask yourself "Why would Lucifer want to collect our souls?". I spent a long while meditating on that question, and when I could not come up with a thoughtful answer, it dawned on me that he doesn't. First of all, Lucifer is a divine and very powerful deity. Collecting mortal souls would have almost no effect to his power or divinity. Now you may be asking yourself, "Well yes, but it wouldn't hurt him to do so either." Now that is true, dear reader, however it wouldn't benefit him either. Lucifer has taught many to focus on self improvement, and I would suspect he practices what he preaches. If collecting souls didn't benefit him, didn't lean towards the overall goal of self improvement, he wouldn't focus much time or energy into it.
Finally, Lucifer gave up his seat alongside God to free humanity, and the angels from the servitude of God. If he risked everything to do so, why would he advocate enslaving yourself to him. He wanted us to reach our full potential of power and divinity, for us to become God-like in our own right. He would not ask for one to move from enslavement to enslavement, oppression to oppression.
However, to those who claim to have sold your soul to "The Devil", don't let this article give you a false sense of security. Although it is impossible to sell your soul to Lucifer, many other Lesser Demons can and will benefit from the collection of mortal souls. Demons are known for lying and deceiving, so who can be sure you haven't sold your soul to a lower imp claiming Lucifer's name for credibility? Think on that.