Most Christians believe that God is changeable, but Mormons do not?
Q. "Joe, what verse from you do you think that Brigham Young got his theory of 'blood atonement?'"
A. "And for this purpose have I established the Constitution of this land, by the hands of wise men whom I raised up unto this very purpose, and redeemed the land by the shedding of blood." (Dec. 16, 1833, D&C 101:80)
Actually, the true contrast is Mormons have gone on their record to uplife the Lds "prophet" Lorenzo Snow "couplet" enough times to considere it "doctrine" -- even though it didn't make canonized "scripture":
Although it is not found in any of Mormonism's Standard Works, an expression which precisely defines the LDS teaching that men can become Gods was coined by fifth LDS President Lorenzo Snow. In June of 1840, Snow declared, "As man is, God once was; as God is, man may become." Besides correctly illustrating the Latter-day Saint teaching that God was once a mere mortal man, this couplet also declares that man has the potential to become God! According to LDS theology, eternal life is synonymous with godhood. In the words of LDS Apostle Bruce McConkie, "Thus those who gain eternal life receive exaltation ... They are gods." (Mormon Doctrine, pg. 237).
Source: Bill McKeever -- see As God Is Man May Become
Hence, most Mormons believe that God changed -- and they tend to actually discard their own "scriptures" on the topic?
It's one of those "can't win" choices for Mormons! They either wind up dissing Mormon "scriptures" on the one hand -- or Lds "prophet" Lorenzo Snow and their current general authority leaders on the other!
As for your comment "Most Christians believe that God is changeable," are you referencing the incarnation -- or something else?
Most Christians believe God is changeable? Gotta throw the flag on that one. Biblically, God is unchangeable, He, His word are unchanging.
God does not change; it is man’s perception of God that changes.