The key differences between Mormonism and Christianity include the manner in which God and Jesus are envisioned and the conception of Jesus Christ. Another notable difference between the religions is the opinion on the authority of Bible.
According to the Main Street Church of Brigham City, Mormonism teaches that God is a being of flesh and blood, and that faithful Mormons who marry in Mormon temples can become Gods themselves. Christians believe God exists only spiritually and their monotheistic beliefs do not allow for humans to attain God-like status. Christianity teaches that the power of the Holy Spirit resulted in the conception of Jesus, and that Mary was a virgin. Mormons believe that, although Jesus is divine, he was an incarnation of God's "spirit children," as are humans. He is only considered unique because he was engendered by God in a physical sense, and he is not considered to be equal to God as Christians believe.
At least some Christians also believe the Bible to be the authoritative word of God. Mormons believe parts of the Bible have been changed or removed altogether. According to Christian Answers, the Bible is least authoritative of the scriptures recognized within the Mormon church. They believe the Book of Mormon and other Mormon scriptures, such as the Doctrine and Covenants and the Pearl of Great Price, restore the altered or missing parts of the Bible.