Mormonism seeks “to explain the ultimate questions of existence: what it means to be a human being and what it means to belong to the larger human family.”
“‘[T]here is a great cooperative enterprise that links the unborn, the living, and the dead, aimed at their mutual salvation and perfection.’”
“As temples continue to be built around the world, barriers between generations fall. All mankind is interconnected and responsible toward one another.”
Read more from this post, which helps give some understanding about the breadth and purpose of the gospel of Jesus Christ, particularly of temple work.