I agree “that uncertainty need not weaken one’s commitment to the claims of a religious life.” In the Book of Mormon, Alma 32, faith is compared to the growth of a tree from a seed. When the seed is nurtured properly, it grows. When our faith is nurtured properly, we can feel the growth of faith in our lives and the influence of the Spirit. This doesn’t mean doubt is gone. It simply serves as a confirmation that the faith is real and should be further nurtured. This is one of the most powerful sermons on the nurturing of faith.