Behold, this is my doctrine—whosoever repenteth and cometh unto me, the same is my church. Whosoever declareth more or less than this, the same is not of me, but is against me; therefore he is not of my church.
3 Nephi 14:12 Therefore, all things whatsoever ye would that men should do to you, do ye even so to them, for this is the law and the prophets.
3 Nephi 15:9-10
Behold, I am the law, and the light. Look unto me, and endure to the end, and ye shall live; for unto him that endureth to the end will I give eternal life. Behold, I have given unto you the commandments; therefore keep my commandments. And this is the law and the prophets, for they truly testified of me.
2 Nephi 30:1-2
For behold, except ye shall keep the commandments of God ye shall all likewise perish; and because of the words which have been spoken ye need not suppose that the Gentiles are utterly destroyed. For behold, I say unto you that as many of the Gentiles as will repent are the covenant people of the Lord; and as many of the Jews as will not repent shall be cast off; for the Lord covenanteth with none save it be with them that repent and believe in his Son, who is the Holy One of Israel.
1 Nephi 14:10 Behold there are save two churches only; the one is the church of the Lamb of God, and the other is the church of the devil; wherefore, whoso belongeth not to the church of the Lamb of God belongeth to that great church, which is the mother of abominations; and she is the whore of all the earth.In “The Teaching that Characterizes the Church of God,” we learned this:
Mosiah 25:22 And thus, notwithstanding there being many churches they were all one church, yea, even the church of God; for there was nothing preached in all the churches except it were repentance and faith in God.In “The Function of the Priesthood,” we learned this:
Alma 13:1, 6
And again, my brethren, I would cite your minds forward to the time when the Lord God gave these commandments unto his children; and I would that ye should remember that the Lord God ordained priests, after his holy order, which was after the order of his Son, to teach these things unto the people. ... And thus being called by this holy calling, and ordained unto the high priesthood of the holy order of God, to teach his commandments unto the children of men, that they also might enter into his rest….
Mosiah 23:14 And also trust no one to be your teacher nor your minister, except he be a man of God, walking in his ways and keeping his commandments.And we also learned, through multiple citations, by both precept and example, that the Ten Commandments given to Moses at Sinai are not sufficient, having been superseded by the Sermon on the Mount: 3 Nephi chapters 12 through 14. The Sermon is the current law and commandments unto all mankind. Torah does not suffice.
Now we get to the standard by which we may judge righteously.
Moroni 7:16-17Everything which invites to do good and to persuade to believe in Christ is of God.
wherefore I show unto you the way to judge
for every thing which inviteth to do good
and to persuade to believe in Christ
is sent forth by the power and gift of Christ
wherefore ye may know with a perfect knowledge it is of God
but whatsoever thing persuadeth men to do evil
and believe not in Christ
and deny him
and serve not God
then ye may know with a perfect knowledge it is of the devil
Since the law of God - the Golden Rule - defines good, and since to believe in Christ means fully relying upon him, confidently trusting him, and therefore doing all things whatsoever he commands without regard to your relationships, your career, your reputation, your holdings, and even your own life, this is equivalent to saying everything which invites you to obey the law of God and to persuade others to keep commandments of Christ is of God.
Everything which persuades men to do evil and believe not in Christ and deny him and serve not God is of the devil.
Since anything short of the Golden Rule is evil, this is equivalent to saying everything which persuades men to do to others what they do not want others to do to them, and to not fully rely upon Christ, and to reject Christ or any of Christ’s commands, teachings, or sayings, and to not keep the commandments of God, is of the devil.
There is a theme to all of this, for there is but one purpose for which we are in this world.
Abraham 3:25 [W]e will prove them herewith, to see if they will do all things whatsoever the Lord their God shall command them[.]That’s all we are here for: to do the commandments of God and endure in so doing until the end shall come, and to teach others to do likewise.
2 Nephi 26:27-32And, again, speaking of the Sermon, the Lord said:
[H]e hath commanded his people
that they should persuade all men to repentance
that there shall be no priestcrafts
for behold priestcrafts are that men preach
and set themselves up for a light unto the world
that they may get gain
and praise of the world
but they seek not the welfare of Zion.
[T]he Lord God hath given a commandment
that all men should have charity which charity is love.
[T]he laborer in Zion shall labor for Zion
for if they labor for money they shall perish
And again, the Lord God hath commanded
that men should not murder
that they should not lie
that they should not steal
that they should not take the name of the Lord their God in vain
that they should not envy
that they should not have malice
that they should not contend one with another
that they should not commit whoredoms
and that they should do none of these things
for whoso doeth them shall perish
JST Matthew 5:21-22
Whosoever therefore shall break one of these least commandments
and shall teach men so to do
he shall in no wise be saved in the kingdom of heaven
but whosoever shall do
and teach these commandments of the law
until it be fulfilled
the same shall be called great
and shall be saved in the kingdom of heaven
for I say unto you
except your righteousness shall exceed that of the scribes
ye shall in no case enter into the kingdom of heaven