Alma 42:1-30:
And now, my son, I perceive there is somewhat more which doth worry your mind, which ye cannot understand—which is concerning the justice of God in the punishment of the sinner; for ye do try to suppose that it is injustice that the sinner should be consigned to a state of misery.
Now behold, my son, I will explain this thing unto thee. For behold, after the Lord God sent our first parents forth from the garden of Eden, to till the ground, from whence they were taken—yea, he drew out the man, and he placed at the east end of the garden of Eden, cherubim, and a flaming sword which turned every way, to keep the tree of life—
Now, we see that the man had become as God, knowing good and evil; and lest he should put forth his hand, and take also of the tree of life, and eat and live forever, the Lord God placed cherubim and the flaming sword, that he should not partake of the fruit—
And thus we see, that there was a time granted unto man to repent, yea, a probationary time, a time to repent and serve God.
For behold, if Adam had put forth his hand immediately, and partaken of the tree of life, he would have lived forever, according to the word of God, having no space for repentance; yea, and also the word of God would have been void, and the great plan of salvation would have been frustrated.
But behold, it was appointed unto man to die—therefore, as they were cut off from the tree of life they should be cut off from the face of the earth—and man became lost forever, yea, they became fallen man.
And now, ye see by this that our first parents were cut off both temporally and spiritually from the presence of the Lord; and thus we see they became subjects to follow after their own will.
Now behold, it was not expedient that man should be reclaimed from this temporal death, for that would destroy the great plan of happiness.
Therefore, as the soul could never die, and the fall had brought upon all mankind a spiritual death as well as a temporal, that is, they were cut off from the presence of the Lord, it was expedient that mankind should be reclaimed from this spiritual death.
Therefore, as they had become carnal, sensual, and devilish, by nature, this probationary state became a state for them to prepare; it became a preparatory state.
And now remember, my son, if it were not for the plan of redemption, (laying it aside) as soon as they were dead their souls were miserable, being cut off from the presence of the Lord.
And now, there was no means to reclaim men from this fallen state, which man had brought upon himself because of his own disobedience;
Therefore, according to justice, the plan of redemption could not be brought about, only on conditions of repentance of men in this probationary state, yea, this preparatory state; for except it were for these conditions, mercy could not take effect except it should destroy the work of justice. Now the work of justice could not be destroyed; if so, God would cease to be God.
And thus we see that all mankind were fallen, and they were in the grasp of justice; yea, the justice of God, which consigned them forever to be cut off from his presence.
And now, the plan of mercy could not be brought about except an atonement should be made; therefore God himself atoneth for the sins of the world, to bring about the plan of mercy, to appease the demands of justice, that God might be a perfect, just God, and a merciful God also.
Now, repentance could not come unto men except there were a punishment, which also was eternal as the life of the soul should be, affixed opposite to the plan of happiness, which was as eternal also as the life of the soul.
Now, how could a man repent except he should sin? How could he sin if there was no law? How could there be a law save there was a punishment?
Now, there was a punishment affixed, and a just law given, which brought remorse of conscience unto man.
Now, if there was no law given—if a man murdered he should die—would he be afraid he would die if he should murder?
And also, if there was no law given against sin men would not be afraid to sin.
And if there was no law given, if men sinned what could justice do, or mercy either, for they would have no claim upon the creature?
But there is a law given, and a punishment affixed, and a repentance granted; which repentance, mercy claimeth; otherwise, justice claimeth the creature and executeth the law, and the law inflicteth the punishment; if not so, the works of justice would be destroyed, and God would cease to be God.
But God ceaseth not to be God, and mercy claimeth the penitent, and mercy cometh because of the atonement; and the atonement bringeth to pass the resurrection of the dead; and the resurrection of the dead bringeth back men into the presence of God; and thus they are restored into his presence, to be judged according to their works, according to the law and justice.
For behold, justice exerciseth all his demands, and also mercy claimeth all which is her own; and thus, none but the truly penitent are saved.
What, do ye suppose that mercy can rob justice? I say unto you, Nay; not one whit. If so, God would cease to be God.
And thus God bringeth about his great and eternal purposes, which were prepared from the foundation of the world. And thus cometh about the salvation and the redemption of men, and also their destruction and misery.
Therefore, O my son, whosoever will come may come and partake of the waters of life freely; and whosoever will not come the same is not compelled to come; but in the last day it shall be restored unto him according to his deeds.
If he has desired to do evil, and has not repented in his days, behold, evil shall be done unto him, according to the restoration of God. And now, my son, I desire that ye should let these things trouble you no more, and only let your sins trouble you, with that trouble which shall bring you down unto repentance.
O my son, I desire that ye should deny the justice of God no more. Do not endeavor to excuse yourself in the least point because of your sins, by denying the justice of God; but do you let the justice of God, and his mercy, and his long-suffering have full sway in your heart; and let it bring you down to the dust in humility.
Helaman 14:13, 15-9, 29-31: And if ye believe on his name ye will repent of all your sins, that thereby ye may have a remission of them through his merits....
For behold, he surely must die that salvation may come; yea, it behooveth him and becometh expedient that he dieth, to bring to pass the resurrection of the dead, that thereby men may be brought into the presence of the Lord.
Yea, behold, this 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.
But behold, the resurrection of Christ redeemeth mankind, yea, even all mankind, and bringeth them back into the presence of the Lord.
Yea, and it 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 down 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.
Therefore repent ye, repent ye, lest by knowing these things and not doing them ye shall suffer yourselves to come under condemnation, and ye are brought down unto this second death....
And this to the intent that whosoever will believe might be saved, and that whosoever will not believe, a righteous judgment might come upon them; and also if they are condemned they bring upon themselves their own condemnation.
And now remember, remember, my brethren, that whosoever perisheth, perisheth unto himself; and whosoever doeth iniquity, doeth it unto himself; for behold, ye are free; ye are permitted to act for yourselves; for behold, God hath given unto you a knowledge and he hath made you free.
He hath given unto you that ye might know good from evil, and he hath given unto you that ye might choose life or death; and ye can do good and be restored unto that which is good, or have that which is good restored unto you; or ye can do evil, and have that which is evil restored unto you.
3 Nephi 11:32-40:
And this is my doctrine, and it is the doctrine which the Father hath given unto me; and I bear record of the Father, and the Father beareth record of me, and the Holy Ghost beareth record of the Father and me; and I bear record that the Father commandeth all men, everywhere, to repent and believe in me.
And whoso believeth in me, and is baptized, the same shall be saved; and they are they who shall inherit the kingdom of God.
And whoso believeth not in me, and is not baptized, shall be damned.
Verily, verily, I say unto you, that this is my doctrine, and I bear record of it from the Father; and whoso believeth in me believeth in the Father also; and unto him will the Father bear record of me, for he will visit him with fire and with the Holy Ghost.
And thus will the Father bear record of me, and the Holy Ghost will bear record unto him of the Father and me; for the Father, and I, and the Holy Ghost are one.
And again I say unto you, ye must repent, and become as a little child, and be baptized in my name, or ye can in nowise receive these things.
And again I say unto you, ye must repent, and be baptized in my name, and become as a little child, or ye can in nowise inherit the kingdom of God.
Verily, verily, I say unto you, that this is my doctrine, and whoso buildeth upon this buildeth upon my rock, and the gates of hell shall not prevail against them.
And whoso shall declare more or less than this, and establish it for my doctrine, the same cometh of evil, and is not built upon my rock; but he buildeth upon a sandy foundation, and the gates of hell stand open to receive such when the floods come and the winds beat upon them.