Doing temple work is one of the ways whereby we are privileged to participate with our Father in Heaven in His work of salvation.
39 For behold, this is my work and my glory—to bring to pass the immortality and eternal life of man.
President Gordon B. Hinckley said:
“[Temple] work, unselfishly given in behalf of those on the other side, comes nearer to the unparalleled vicarious work of the Savior than any other of which I know. The great and important work of teaching the gospel of Christ to the people of the world is incomplete, at best, if it does not also provide for that teaching to those in another sphere and making available to them those gospel ordinances required of all if they are to move forward on the way of eternal life.
“These temples are there to be used, and those who use them will reap a blessing of harmony in their lives. They will draw nearer unto the Lord, and He will draw nearer unto them.
“There are those few who mock our temple work. They may mock the language, but they cannot mock the Spirit, nor can they mock the truth. I bear testimony of the universality of our Father’s love, of the universality of the salvation from death which came through the sacrifice of the Savior, of the universality of the opportunity for all generations of men and women to the great blessings of our Father, who said, ‘This is my work and my glory—to bring to pass the immortality and eternal life of man’ (Moses 1:39). I so testify in the name of the Lord Jesus Christ, amen.”
(“Rejoice in This Great Era of Temple Building,” Ensign, Nov. 1985, 60.)