Am I reading this right?

[Siatris]

"The books of Jews, Christians and Muslims, as of those who are without, accept in a sense, i.e., so far as they agree with and conform to my statutes. Whatsoever is contrary to these, they have altered; do not accept it." - Satan, The Al-Jilwah

I know the Luciferian medieval folklore is a corruption, but I'm asking if this is what Satan is referring to here, if so I may be able to help convert a friend to Real Satanism.