He explains what we believe as Latter-day Saints:
Latter-day Saints believe in applying the best available scientific knowledge and techniques. We use nutrition, exercise, and other practices to preserve health, and we enlist the help of healing practitioners, such as physicians and surgeons, to restore health.
The use of medical science is not at odds with our prayers of faith and our reliance on priesthood blessings. When a person requested a priesthood blessing, Brigham Young would ask, “Have you used any remedies?” To those who said no because “we wish the Elders to lay hands upon us, and we have faith that we shall be healed,” President Young replied: “That is very inconsistent according to my faith. If we are sick, and ask the Lord to heal us, and to do all for us that is necessary to be done, according to my understanding of the Gospel of salvation, I might as well ask the Lord to cause my wheat and corn to grow, without my plowing the ground and casting in the seed. It appears consistent to me to apply every remedy that comes within the range of my knowledge, and [then] to ask my Father in Heaven . . . to sanctify that application to the healing of my body.”Miracle of Healing is scriptural and modern as well:
Many scriptures teach that the servants of the Lord “shall lay hands on the sick, and they shall recover” (Mark 16:18). Miracles happen when the authority of the priesthood is used to bless the sick. I have experienced these miracles. As a boy and as a man I have seen healings as miraculous as any recorded in the scriptures, and so have many of you.He lists 5 parts of a priesthood blessing: (1) Anointing, (2) the sealing of the anointing, (3) faith, (4) the words of the blessing, and (5) the will of the Lord.
Anointing:
In the New Testament we read that Jesus’s Apostles “anointed with oil many that were sick, and healed them” (Mark 6:13). The book of James teaches the role of anointing in connection with the other elements in a healing blessing by priesthood authority:
“Is any sick among you? let him call for the elders of the church; and let them pray over him, anointing him with oil in the name of the Lord:
Sealing the Anointing:
When elders anoint a sick person and seal the anointing, they open the windows of heaven for the Lord to pour forth the blessing He wills for the person afflicted.
Faith:President Brigham Young taught: “When I lay hands on the sick, I expect the healing power and influence of God to pass through me to the patient, and the disease to give way. . . . When we are prepared, when we are holy vessels before the Lord, a stream of power from the Almighty can pass through the tabernacle of the administrator to the system of the patient, and the sick are made whole.”
Words of Blessing:President Spencer W. Kimball said: “The need of faith is often underestimated. The ill one and the family often seem to depend wholly on the power of the priesthood and the gift of healing that they hope the administering brethren may have, whereas the greater responsibility is with him who is blessed. . . . The major element is the faith of the individual when that person is conscious and accountable. ‘Thy faith hath made thee whole’ [Matthew 9:22] was repeated so often by the Master that it almost became a chorus.”
These words can be very important, but their content is not essential and they are not recorded on the records of the Church. In some priesthood blessings—like a patriarchal blessing—the words spoken are the essence of the blessing. But in a healing blessing it is the other parts of the blessing—the anointing, the sealing, faith, and the will of the Lord—that are the essential elements. . .
(I thought this was comforting):
Fortunately, the words spoken in a healing blessing are not essential to its healing effect. If faith is sufficient and if the Lord wills it, the afflicted person will be healed or blessed whether the officiator speaks those words or not. Conversely, if the officiator yields to personal desire or inexperience and gives commands or words of blessing in excess of what the Lord chooses to bestow according to the faith of the individual, those words will not be fulfilled. Consequently, brethren, no elder should ever hesitate to participate in a healing blessing because of fear that he will not know what to say. The words spoken in a healing blessing can edify and energize the faith of those who hear them, but the effect of the blessing is dependent upon faith and the Lord’s will, not upon the words spoken by the elder who officiated.
Will of the Lord:
We must always remember that faith and the healing power of the priesthood cannot produce a result contrary to the will of Him whose priesthood it is...
We do all that we can for the healing of a loved one, and then we trust in the Lord for the outcome.