The temptations and tribulations we experience, plus any testing that the Lord sees fit to impose, can lead to our full conversion and healing. But this happens if, and only if, we do not harden our hearts or stiffen our necks against Him. If we remain firm and steadfast, come what may, we achieve the conversion the Savior intended when He said to Peter, “When thou art converted, strengthen thy brethren,” a conversion so complete that it cannot be undone. The promised healing is the cleansing and sanctification of our sin-wounded souls, making us holy. – D. Todd Christofferson, “Firm and Steadfast in the Faith of Christ,” Ensign (CR) November 2018