Mormons believe the oldest lie in the Book: that man can be like God. To them, God is just a flesh-and-bones man who was exalted to godhood: “As man is, God once was. As God is, man may become.”
Numbers 23:19 God is not a man, that He should lie, Nor a son of man, that He should repent. Has He said, and will He not do? Or has He spoken, and will He not make it good?