Spiritual death ceases for those spirits who come up out of hell [in the spirit world] to receive an inheritance in the telestial world. (D&C 76:98-112.) Although those in the telestial world do not receive the fulness of reward, they do receive ’of the Holy Spirit through the ministration of the terrestrial, ’ and consequently they are in the presence of the Lord (in this sense) and are no longer spiritually dead. (D&C 76:81 -88.)
Pending the day when they come forth in the second resurrection they are spiritually dead; they ’have their part in that lake which burneth with fire and brimstone, which is the second death (D&C 63:17-18), but when they come out of hell, spiritual death ceases for them… . Thus, eventually, all are redeemed from spiritual death except those who have sinned unto death (D&C 64:7), that is, those who are destined to be sons of perdition.“ (Mormon Doctrine, p. 758; cf. Revelation 20:12-15; D&C 76:37.)”
“The Second Death”
The first death, which came upon Adam and Eve after their transgression in the Garden of Eden, was a spiritual death-they were cast out of the presence of God and became dead as to the things of the Spirit, thus requiring them to be born again as to things of righteousness.
“Wherefore, I, the Lord God, caused that he [Adam] should be cast out from the Garden of Eden, from my presence, because of his transgression, wherein he became spiritually dead, which is the first death, even that same death which is the last death, which is spiritual, which shall be pronounced upon the wicked when I shall say: Depart, ye Cursed”
(D&C 29:41).
Samuel the Lamanite taught that Christ’s death “bringeth to pass the resurrection, and redeemeth all mankind from the first death-that spiritual death; for all mankind, by the fall of Adam being cut off from the presence of the Lord, are considered as dead, both as to things temporal and to things spiritual.” Those who seek deliverance from this death through the atoning powers of Christ and the ordinances of salvation are made alive in Christ-they live again, are “quickened in the inner man.”
Those who choose, however, to turn a deaf ear to the words of life and reject the counsel of the Lord’s servants shall experience a second spiritual death. “The resurrection of Christ redeemeth mankind,” Samuel continued, “yea, even all mankind, and bringeth them back into the presence of the Lord. Yea, and [the Atonement] bringeth to pass the condition of repentance, that whosoever repenteth the same is not hewn down and cast into the fire; but whosoever repenteth not is hewn do it and cast into the fire; and there cometh upon them again a spiritual death, yea, a second death, for they are cut off again as to things pertaining to righteousness.”
(Helaman 14:16-18; italics added. Cf. Alma 12:16, 32; Alma 40:26.)