Let me count the ways...
"For thou shalt worship no other god: for the LORD, whose name is Jealous, is a jealous God" -- Exodus 34:14
Men do not become God by being Christians. Through the sanctifying work of the Holy Spirit, we become more and more Christ-like. But we always remain human beings, fallen sinners who are unable to save ourselves and in need of a Savior who will clothe us in His righteousness, His obedience, His mercy.
Your error is the basic lie of the occult -- that men can become gods.
We are saved by Christ within us, not by our becoming Christ ourselves.
It's a distinction upon which our salvation turns.