Dwindle in Unbelief
When one prizes his or her errors and holds them as true (when they are not), one dwindles in unbelief.1 Unbelief is often used in connection with losing truth, forsaking doctrine, and therefore, “dwindling.” The phrase “dwindling in unbelief” is the Book of Mormon’s way to describe moving from a state of belief, with true and complete doctrine, to a state of unbelief, where the truth has been discarded. Miracles end because men dwindle in unbelief.2
1 “Sorting Things Out,” July 22, 2012, blog post.
2 Passing the Heavenly Gift, 52.