Mormon Idolatry
Mormons are idolaters and go to hell when they die. Believing yourself to become a god is idolatry, as there is only one God.
Ezekiel 28
Mormons Exalt Themselves To Godhood
Mormons believe that people on earth can be exalted to Godhood, whereas Christians believe that there is only one God.
The Fall Of Lucifer
God also spoke unto Isaiah regarding the fall of the person we know as the devil, from heaven and onto the earth.