"All of us have felt something of both union and separation," said Elder Henry B. Eyring of the Quorum of the Twelve at the April 1998 general conference.
"Sometimes in families and perhaps in other settings we have glimpsed life when one person put the interests of another above his or her own, in love and with sacrifice. And all of us know something of the sadness and loneliness of being separate and alone. We don't need to be told which we should choose. We know. But we need hope that we can experience unity in this life and qualify to have it forever in the world to come. And we need to know how that great blessing will come so that we can know what we must do."
Elder Eyring said that the Savior spoke of that unity and how people will have their natures changed to make it possible.
"He taught it clearly in the prayer He gave in His last meeting with His Apostles before His death," Elder Eyring said. "That supernally beautiful prayer is recorded in the book of John. He was about to face the terrible sacrifice for all of us that would make eternal life possible. He was about the leave the Apostles whom He had ordained, whom He loved, and with whom He would leave the keys to lead His Church. And so He prayed to His Father, the perfect Son to the perfect Parent. We see in His words the way families will be made one, as will all the children of our Heavenly Father who follow the Savior and His servants:
" 'As thou hast sent me into the world, even so have I also sent them into the world.
" 'And for their sakes I sanctify myself, that they also might be sanctified through the truth.
" 'Neither pray I for these alone, but for them also which shall believe on me through their word;
" 'That they all may be one; as thou, Father, art in me, and I in thee, that they also may be one in us: that the world may believe that thou hast sent me.' (John 17:18-21.)
"In those few words He made clear how the gospel of Jesus Christ can allow hearts to be made one," Elder Eyring said. "Those who would believe the truth He taught could accept the ordinances and the covenants offered by His authorized servants. Then, through obedience to those ordinances and covenants, their natures would be changed. The Savior's Atonement in that way makes it possible for us to be sanctified. We can then live in unity, as we must to have peace in this life and to dwell with the Father and His Son in eternity."