(You can find the talk in the Nov. 1988 Ensign under "The Healing Power of Christ")
Christ healed by the power of God which was within Him. That power He gave to His chosen disciples, saying, “And I will give unto thee the keys of the kingdom of heaven.” (Matt. 16:19.)
That same power has been restored in this generation. It came through the laying on of hands by Peter, James, and John, who received it from the Lord Himself. It was bestowed upon Joseph Smith, the prophet of this dispensation. Its presence is among us.....
Declared James of old: “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:
“And the prayer of faith shall save the sick, and the Lord shall raise him up; and if he have committed sins, they shall be forgiven him.” (James 5:14–15.)
That power to heal the sick is still among us. It is the power of the priesthood of God. It is the authority held by the elders of this Church.
We welcome and praise and utilize the marvelous procedures of modern medicine which have done so much to alleviate human suffering and lengthen human life. All of us are indebted to the dedicated men and women of science and medicine who have conquered so much of disease, who have mitigated pain, who have stayed the hand of death. I cannot say enough of gratitude for them.
Yet they are the first to admit the limitations of their knowledge and the imperfection of their skills in dealing with many matters of life and death. The mighty Creator of the heavens and the earth and all that in them are has given to His servants a divine power that sometimes transcends all the powers and knowledge of men. I venture to say that there is scarcely a faithful elder within the sound of my voice who could not recount instances in which this healing power has been made manifest in behalf of the sick. It is the healing power of Christ....
As members of the Church of Jesus Christ, ours is a ministry of healing, with a duty to bind the wounds and ease the pain of those who suffer. Upon a world afflicted with greed and contention, upon families distressed by argument and selfishness, upon individuals burdened with sin and troubles and sorrows, I invoke the healing power of Christ, giving my witness of its efficacy and wonder. I testify of Him who is the great source of healing. He is the Son of God, the Redeemer of the world, “The Sun of Righteousness,” who came “with healing in his wings.” Of this I humbly testify in the name of the Lord Jesus Christ, amen.