1. The simple answer to this question would be yes.
The longer answer would involve quoting Bible passages stating we are "heirs of God, and joint-heirs of Christ", that in my Church we believe in a pre-existence (that we lived with God and Jesus Christ before we came to this Earth), and during this time a plan (often referred to as the plan of happiness, salvation or redemption) was given to us. Those who fully accepted Christ and did all that was expected would receive "all that the Father" has. Even that answer barely explains it all, but I hope it shows the point of why we believe that.
You've probably guessed that I would disagree, but I would like to know the Mormon church's interpretation of passages such as Isaiah 44:6-8 (in KJV since I believe that is what you prefer):
"6 Thus saith the LORD the King of Israel, and his redeemer the LORD of hosts; I am the first, and I am the last; and
beside me there is no God. 7 And who, as I, shall call, and shall declare it, and set it in order for me, since I appointed the ancient people? and the things that are coming, and shall come, let them shew unto them. 8
Fear ye not, neither be afraid: have not I told thee from that time, and have declared it? ye are even my witnesses.
Is there a God beside me? yea, there is no God?; I know not any." (emphasis mine)
In fact, this theme is restated and occurs in many different wordings throughout Isaiah (43:11, 45:5-6, 45:21...) as well as elsewhere in Scripture. I have heard that LDS believe in the plurality of
Elohim, but what is your understanding of a passage that, in my opinion, is so clear-cut as this?