Summary

Joseph F. Smith Journal of Discourses — Volume 21…

If he had stopped here instead of his being the Savior of the world, he, as well as all mankind, would have perished irredeemably, never to have come forth out of the grave; for it was designed from the beginning that he should be the first fruits of them that slept; it was part of the great plan that he should burst the bands of death and gain the victory over the grave. If therefore his mission had ceased when he gave up the ghost, the world would have slumbered in the dust in interminable death, never to have risen to live again.
Source: Wikisource

Joseph F. Smith Journal of Discourses — Volume 21…

So after his resurrection from the dead he could return to the Father, there to receive the welcome plaudit, "Well done, you have done your work, you have accomplished your mission; you have wrought out salvation for all the children of Adam; you have redeemed all men from the grave; and through their obedience to the ordinances of the Gospel which you have established, they can also be redeemed from the spiritual death, again to be brought back into our presence, to partake of glory, exaltation and eternal life with us."
Source: Wikisource

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