D&C 98:16-38

16Therefore, renounce war and proclaim peace, and seek diligently to turn the hearts of the children to their fathers, and the hearts of the fathers to the children;

17And again, the hearts of the Jews unto the prophets, and the prophets unto the Jews; lest I come and smite the whole earth with a curse, and all flesh be consumed before me.

18Let not your hearts be troubled; for in my Father's house are many mansions, and I have prepared a place for you; and where my Father and I am, there ye shall be also.

19Behold, I, the Lord, am not well pleased with many who are in the church at Kirtland;

20For they do not forsake their sins, and their wicked ways, the pride of their hearts, and their covetousness, and all their detestable things, and observe the words of wisdom and eternal life which I have given unto them.

21Verily I say unto you, that I, the Lord, will chasten them and will do whatsoever I list, if they do not repent and observe all things whatsoever I have said unto them.

22And again I say unto you, if ye observe to do whatsoever I command you, I, the Lord, will turn away all wrath and indignation from you, and the gates of hell shall not prevail against you.

23Now, I speak unto you concerning your families—if men will smite you, or your families, once, and ye bear it patiently and revile not against them, neither seek revenge, ye shall be rewarded;

24But if ye bear it not patiently, it shall be accounted unto you as being meted out as a just measure unto you.

25And again, if your enemy shall smite you the second time, and you revile not against your enemy, and bear it patiently, your reward shall be an hundred-fold.

26And again, if he shall smite you the third time, and ye bear it patiently, your reward shall be doubled unto you four-fold;

27And these three testimonies shall stand against your enemy if he repent not, and shall not be blotted out.

28And now, verily I say unto you, if that enemy shall escape my vengeance, that he be not brought into judgment before me, then ye shall see to it that ye warn him in my name, that he come no more upon you, neither upon your family, even your children's children unto the third and fourth generation.

29And then, if he shall come upon you or your children, or your children's children unto the third and fourth generation, I have delivered thine enemy into thine hands;

30And then if thou wilt spare him, thou shalt be rewarded for thy righteousness; and also thy children and thy children's children unto the third and fourth generation.

31Nevertheless, thine enemy is in thine hands; and if thou rewardest him according to his works thou art justified; if he has sought thy life, and thy life is endangered by him, thine enemy is in thine hands and thou art justified.

32Behold, this is the law I gave unto my servant Nephi, and thy fathers, Joseph, and Jacob, and Isaac, and Abraham, and all mine ancient prophets and apostles.

33And again, this is the law that I gave unto mine ancients, that they should not go out unto battle against any nation, kindred, tongue, or people, save I, the Lord, commanded them.

34And if any nation, tongue, or people should proclaim war against them, they should first lift a standard of peace unto that people, nation, or tongue;

35And if that people did not accept the offering of peace, neither the second nor the third time, they should bring these testimonies before the Lord;

36Then I, the Lord, would give unto them a commandment, and justify them in going out to battle against that nation, tongue, or people.

37And I, the Lord, would fight their battles, and their children's battles, and their children's children's, until they had avenged themselves on all their enemies, to the third and fourth generation.

38Behold, this is an ensample unto all people, saith the Lord your God, for justification before me.