Repent until

1. Alma 34: 33, 35
     33 And now, as I said unto you before, as ye have had so many witnesses, therefore, I beseech of you that ye do not procrastinate the day of your repentance until the end; for after this day of life, which is given us to prepare for eternity, behold, if we do not improve our time while in this life, then cometh the night of darkness wherein there can be no labor performed.
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     35 For behold, if ye have procrastinated the day of your repentance even until death, behold, ye have become subjected to the spirit of the devil, and he doth seal you his; therefore, the Spirit of the Lord hath withdrawn from you, and hath no place in you, and the devil hath all power over you; and this is the final state of the wicked.
2. D&C 5: 19
     19 For a desolating scourge shall go forth among the inhabitants of the earth, and shall continue to be poured out from time to time, if they repent not, until the earth is empty, and the inhabitants thereof are consumed away and utterly destroyed by the brightness of my coming.