What teachings from Satan??? All the false teachings of Mormonism....
1. Jesus and Satan are actual brothers in the pre-mortal spirit existence.
But since you don't believe in the pre-existence, how can this be problem for you? And does the book of Job start of with Satan in heaven?
2. God was not always God but was a man who had to learn how to become a god
And does this mean that you don't believe that Christ was the Son of God? Or that Paul was teaching false doctrine when he said that Christ learned obedience by the things he suffered? Or that John was teaching false doctrine when he said the as Christ grew up, he grew in favor with both God and man?
3. Father, Son, and Holy Spirit are three separate gods.
Its what the Bible teaches. Unless you believe that Christ and the apostles failed to teach us enough about God and it required a council convened by a pagan emperor to solve a political crisis and tell us the truth that Christ and the apostles never taught?
4. We are saved by grace "after all that we do."
Maybe you should realize that this is written in early modern English and may not mean what you want it to mean.
5. We are saved by grace through faith plus obeying Mormon teachings.
Most Mormon teaching are in the Bible. We are saved by grace. But if I am to obey the commandment to follow Christ, I must do as he did. Or else how can I say that I am following Christ. And all of that is contained in the Bible.
6. Three separate, named levels of heaven and who goes to each after death
And this is a bad thing? To know that we don't receive an infinite punishment for a finite sin. And didn't Christ say that there were many mansion in his Father's house?
7. The necessity of building dozens of temples, and furnishing them lavishly and expensively in which to....
That should be hundreds of temples. And how is this be a benefit to Satan? In the temple we are taught to obey God and to follow Christ. Is that also a doctrine of Satan?
8. Perform the Temple Endowment ceremony, which includes showing butchered and perverted versions of the Creation and Fall stories from Genesis, in a video.
What exactly is your objection here? That we teach that God created the earth? that the Garden of Eden was where God placed Adam and Eve? That they fell because they disobeyed God and partook of the fruit of the Tree of the Knowledge of Good and Evil? How does teaching about the creation benefit Satan? I thought Evolution was from Satan?
9. Man can become gods and creators of worlds and populate them with their own spirit children.
Then tell me what did John mean when he wrote in Revelation that we would be able to sit on the throne with Christ and God the Father? Do you understand what it meant to the ancient people when someone sat on the throne?
10. JS, Jr. was a prophet sent by God.
And if he wasn't how is God to call a prophet today? And how are you going to recognize the two prophets spoken of in Revelation? You do believe that God will call more prophets? At least John believe that he would.
All of these are false teachings and all false teachings are lies--who is the father of lies, Richard?
You seem to be the mother of lies based on what you have posted here.
These shall do as starters. Others on here can chime in, in case I forgot some.