You answered this question with the quote from Timothy -"And without controversy great is the mystery of godliness: God was manifest in the flesh, justified in the Spirit, seen of angels, preached unto the Gentiles, believed on in the world, received up into glory. " This is a Mystery, but it is described in Scripture. It is consistent with Scripture. It doesn't contradict Scripture.
A changing god is inconsistent with Scripture, and is contradicted by the BOM. You have to change the clear language of the BOM - ""I know that God is not a partial God, neither a changeable being; but he is unchangeable from all eternity to all eternity" (Moroni 8:18). "For do we not read that God is the same yesterday, today and forever, and in him there is no variableness, neither shadow of changing? And now, if ye have imagined up unto yourselves a god who doth vary, and in whom there is shadow of changing, then ye have imagined up unto yourselves a god who is not a God of miracles" (Mormon 9:9-10).
You say that these references to God refers to doctrines or laws. Well, that's not consistent with the clear language of Scripture.
Discuss the issues all you want, but do NOT make it personal.
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