Moroni declared that God is an unchangeable being who will remain “the same yesterday, today, and forever” (Mormon 9:9). Modern revelation confirms that the coming forth of the Book of Mormon proves God continues to “inspire men and call them to his holy work” in our day as He has in the past, “showing that he is the same God yesterday, today, and forever” (D&C 20:11–12).
The Lectures on Faith state that in order to have perfect faith in God one must have a correct idea of God’s “character, perfections, and attributes” ([1985], 38). One of God’s characteristics is that He will not change: “[God] changes not, neither is there variableness with him; but that he is the same from everlasting to everlasting, being the same yesterday, today, and for ever; and that his course is one eternal round, without variation” (Lectures on Faith, 41). Consider the blessing of knowing that God continues His holy work in our day and will always remain the same yesterday, today, and forever.
Moroni warned us that there are those who “have imagined … a god who doth vary” (Mormon 9:10). Elder Neal A. Maxwell (1926–2004) of the Quorum of the Twelve Apostles taught that we could not believe or trust in a God who changes or is still learning new truths:
“The omniscience of God in the minds of some well-meaning Latter-day Saints has been qualified by the concept of ‘eternal progression.’ Some have wrongly assumed God’s progress is related to His acquisition of additional knowledge. …
“… God derives His great and continuing joy and glory by increasing and advancing His creations, and not from new intellectual experiences.
“There is a vast difference, therefore, between an omniscient God and the false notion that God is on some sort of post-doctoral fellowship, still searching for additional key truths and vital data. Were the latter so, God might, at any moment, discover some new truth not previously known to Him that would restructure, diminish, or undercut certain truths previously known by Him. Prophecy would be mere prediction. Planning assumptions pertaining to our redemption would need to be revised. Fortunately for us, however, His plan of salvation is constantly underway—not constantly under revision” (All These Things Shall Give Thee Experience [1979], 14–15).