And without the ordinances thereof, and the authority of the priesthood, the power of godliness is not manifest unto men in the flesh; - D&C 84:21
"The priesthood is here," said President Gordon B. Hinckley, then second counselor in the First Presidency, during the October 1984 general conference. "It has been conferred upon us. We act in that authority. We speak as sons of God in the name of Jesus Christ and as holders of this divinely given endowment. We know, for we have seen, the power of this priesthood. We have seen the sick healed, the lame made to walk, and the coming of light and knowledge and understanding to those who have been in darkness. . . .
"It is the power and the authority to govern in the affairs of the kingdom of God. It is given only by ordination by the laying on of hands by those in authority to do so. The qualification for eligibility is obedience to the commandments of God.
"There is no power on the earth like it. Its authority extends beyond life, through the veil of death, to the eternities ahead. It is everlasting in its consequences."