“It is reasonable to believe, in the absence of direct revelation by which alone absolute knowledge of the matter could be acquired, that, in accordance with God’s plan of eternal progression, advancement from grade to grade within any kingdom, and from kingdom to kingdom, will be provided for. But if the recipients of a lower glory be enabled to advance, surely the intelligences of higher rank will not be stopped in their progress; and thus we may conclude, that degrees and grades will ever characterize the kingdoms of our God. Eternity is progressive; perfection is relative; the essential feature of God’s living purpose is its associated power of eternal increase.”

James E. Talmage, The Articles of Faith [1899 edition] pp. 420-421

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