"I recognize that, on occasion, some of our most fervent prayers may seem to go unanswered. We wonder, “Why?” I know that feeling! I know the fears and tears of such moments. But I also know that our prayers are never ignored. Our faith is never unappreciated. I know that an all-wise Heavenly Father’s perspective is much broader than is ours. While we know of our mortal problems and pain, He knows of our immortal progress and potential. If we pray to know His will and submit ourselves to it with patience and courage, heavenly healing can take place in His own way and time."
(Russell M. Nelson, “Jesus Christ—the Master Healer,” Ensign or Liahona, Nov. 2005, 86)
"Righteousness and faith certainly are instrumental in healing the sick, deaf, and lame—if such healing accomplishes God’s purposes and is in accordance with His will. Thus, even if we have strong faith, many mountains will not be moved. And not all of the sick and infirm will be healed. If all opposition were curtailed, if all maladies were removed, then the primary purposes of the Father’s plan would be frustrated."
(David A. Bednar, Accepting the Lord’s Will and Timing, Ensign or Liahona, Aug. 2016, 34)
"Afflictions can come from spiritual as well as physical causes. Alma the Younger remembered that his sin was so painful that he wished to “become extinct both soul and body, that [he] might not be brought to stand in the presence of … God, to be judged of [his] deeds” [ Alma 36:15 ]. At such times, how can we be healed by Him?
"We can more fully repent! We can become more fully converted! Then the “Son of Righteousness” can more fully bless us by His healing hand.
"… Faith, repentance, baptism, a testimony, and enduring conversion lead to the healing power of the Lord."
(Russell M. Nelson, “Jesus Christ—the Master Healer,” Ensign or Liahona, Nov. 2005, 86)