"Unavoidably perish"

1. Mosiah 13: 28
     28 And moreover, I say unto you, that ^asalvation doth not come by the ^blaw alone; and were it not for the ^catonement, which God himself shall make for the sins and iniquities of his people, that they must unavoidably perish, notwithstanding the law of Moses.
2. Alma 34: 9
     9 For it is expedient that an ^aatonement should be made; for according to the great ^bplan of the Eternal God there must be an atonement made, or else all mankind must unavoidably perish; yea, all are hardened; yea, all are ^cfallen and are lost, and must perish except it be through the atonement which it is expedient should be made.
3. Hel. 4: 25
     25 Therefore the Lord did cease to preserve them by his miraculous and matchless power, for they had fallen into a state of ^aunbelief and awful wickedness; and they saw that the Lamanites were exceedingly more numerous than they, and except they should ^bcleave unto the Lord their God they must unavoidably perish.