Neal A. Maxwell
"Jesus called upon us to be 'perfect even as your Father which is in heaven is perfect.' (Matthew 5:48.) Would a Lord who cannot lie taunt us with any possibility that is irrevocably out of our reach? With God's helping grace, Moroni promised, we can become 'holy, without spot.' (Moroni 10:33.)
"It can be done, but not all at once." (Notwithstanding My Weakness, p. 28)
Bruce C. Hafen
"We know very little about this process of sanctification, but it is clear that we do not achieve perfection solely through our own efforts. Knowing just that much is enough to give us a new perspective. Because so many of us feel overwhelmed with the scriptural injunction to be perfect, the idea that divine grace is the final source of our perfection may seem too good to be true. That is how Christ's grace appears to those carrying the burden of truly serious sins. Honest people who carry the burden of being called 'saints' may feel the same way, as they stumble daily through the discouraging debris of their obvious imperfections. But the gospel has good news not only for the serious transgressor, but for all who long to be better than they are. We truly become saints 'through the atonement of Christ, the Lord,' which, after all we can do, has power to help us become 'as a child, submissive, meek, humble, patient, full of love.' (Mosiah 3:19; emphasis added.)" (The Broken Heart, p. 18)