And is that "one" God Christ, or his Father? The second question is why would Lucifer think that he could become God, if there is only one God?
Do you believe in the God of Abraham or are the Muslims more scripturally correct than you?
Godhood is not something you inherit, nor is it something you grasp after. Even the Son of God from eternity didn't grasp after the glory He already shared with the Father (John 17:5; Phil. 2:6).
Extra gods is in violation of all kinds of Scripture...Isaiah 43:10, for example: "Before me no god was formed, nor will there be one after me." (So did Isaiah have it wrong? Should that verse have read: "Before me were millions of gods; and millions are in line"?) Or what about Isaiah 44:8: "You are my witnesses. Is there any God besides me? No, there is no other rock; I know not one." (Should that have been changed in the JST to "Are there other gods besides me? I know plenty?"). [see also Isaiah 45:14: "'Surely God is with you, and there is no other; there is no other god.'"]
And is that "one" God Christ, or his Father?
Even on the human level that is a bad assumption--to divide what God has not divided.
You meet a woman who says she is Mrs. Finkelbinderbottomschmauser. You say, "No way. I just met a gentleman who told me his name was Finkelbinderbottomschmauser, and I told them there's gotta be only one Finkelbinderbottomschauser name in the world, and he agreed with me." (And he was right) "And now you come along and tell me you share the same name. So which one of you is the real one?"
Obviously, if the two are married as one, they share the same identity without sharing the same "personage." If that's true at the human level, how much more intricate is the unifying intimacy of the Father and the Son.
Jesus always has been God (John 1:1). God always was God (Ps. 90:2). Jesus has existed from all eternity in a special relationship with the Father (see Micah 5:2). Even D&C 39:1 reads, "Hearken & listen to the voice of him who is from all eternity to all eternity, the Great I AM, even Jesus Christ..."
Do you believe in the God of Abraham or are the Muslims more scripturally correct than you?
Again, as indicated above, this is a faulty assumption (acknowledging the reality of the Son of God automatically brings addition into the equation--1 Father + 1 Son = 2 divine beings). But the correct mathematical understanding is 1 Father X 1 Son X 1 Holy Spirit = 1 God.
No one feed the beast.