Duty of the Saints in relation to their persecutors, as written by Joseph Smith the Prophet while a prisoner in the jail at Liberty, Missouri. This section is an excerpt from an epistle to the Church written around March 22, 1839 (see the heading to section 122).

1–6, The Saints should collect and publish an account of their sufferings and persecutions; 7–10, The same spirit that established the false creeds also leads to persecution of the Saints; 11–17, Many among all sects will yet receive the truth.

1 And again, we would suggest for your consideration the propriety of all the saints gathering up a knowledge of all the facts, and sufferings and abuses put upon them by the people of this State; 2 And also of all the property and amount of damages which they have sustained, both of character and personal injuries, as well as real property; 3 And also the names of all persons that have had a hand in their oppressions, as far as they can get hold of them and find them out.
Note: Believers will not be focused on earthly possessions.
But recall the former days in which, after you were illuminated, you endured a great struggle with sufferings: partly while you were made a spectacle both by reproaches and tribulations, and partly while you became companions of those who were so treated; for you had compassion on me in my chains, and joyfully accepted the plundering of your goods, knowing that you have a better and an enduring possession for yourselves in heaven. Hebrews 10:32-34

4 And perhaps a committee can be appointed to find out these things, and to take statements and affidavits; and also to gather up the libelous publications that are afloat; 5 And all that are in the magazines, and in the encyclopedias, and all the libelous histories that are published, and are writing, and by whom, and present the whole concatenation of diabolical rascality and nefarious and murderous impositions that have been practiced upon this people— 6 That we may not only publish to all the world, but present them to the heads of government in all their dark and hellish hue, as the last effort which is enjoined on us by our Heavenly Father, before we can fully and completely claim that promise which shall call him forth from his hiding place; and also that the whole nation may be left without excuse before he can send forth the power of his mighty arm.
Note: Jesus Christ does not teach revenge.
“You have heard that it was said, An eye for an eye and a tooth for a tooth.’ But I tell you not to resist an evil person. But whoever slaps you on your right cheek, turn the other to him also. If anyone wants to sue you and take away your tunic, let him have your cloak also. And whoever compels you to go one mile, go with him two. Give to him who asks you, and from him who wants to borrow from you do not turn away.” Matthew 5:38-42

7 It is an imperative duty that we owe to God, to angels, with whom we shall be brought to stand, and also to ourselves, to our wives and children, who have been made to bow down with grief, sorrow, and care, under the most damning hand of murder, tyranny, and oppression, supported and urged on and upheld by the influence of that spirit which hath so strongly riveted the creeds of the fathers, who have inherited lies, upon the hearts of the children, and filled the world with confusion, and has been growing stronger and stronger, and is now the very mainspring of all corruption, and the whole earth groans under the weight of its iniquity. 8 It is an iron yoke, it is a strong band; they are the very handcuffs, and chains, and shackles, and fetters of hell.
Note: Jesus Christ does not teach revenge.
“You have heard that it was said, you shall love your neighbor and hate your enemy.’ But I say to you, love your enemies, bless those who curse you, do good to those who hate you, and pray for those who spitefully use you and persecute you, that you may be sons of your Father in heaven; for He makes His sun rise on the evil and on the good, and sends rain on the just and on the unjust. For if you love those who love you, what reward have you? Do not even the tax collectors do the same? And if you greet your brethren only, what do you do more than others? Do not even the tax collectors do so?” Matthew 5:43-47

9 Therefore it is an imperative duty that we owe, not only to our own wives and children, but to the widows and fatherless, whose husbands and fathers have been murdered under its iron hand; 10 Which dark and blackening deeds are enough to make hell itself shudder, and to stand aghast and pale, and the hands of the very devil to tremble and palsy.
Note: Believers will overcome evil with good.
Repay no one evil for evil. Have regard for good things in the sight of all men. If it is possible, as much as depends on you, live peaceably with all men. Beloved, do not avenge yourselves, but rather give place to wrath; for it is written, “Vengeance is Mine, I will repay,” says the Lord. Therefore, “If your enemy is hungry, feed him; If he is thirsty, give him a drink; For in so doing you will heap coals of fire on his head.” Do not be overcome by evil but overcome evil with good. Romans 12:17-21

11 And also it is an imperative duty that we owe to all the rising generation, and to all the pure in heart—12 For there are many yet on the earth among all sects, parties, and denominations, who are blinded by the subtle craftiness of men, whereby they lie in wait to deceive, and who are only kept from the truth because they know not where to find it—13 Therefore, that we should waste and wear out our lives in bringing to light all the hidden things of darkness, wherein we know them; and they are truly manifest from heaven—14 These should then be attended to with great earnestness.
Note: Believers will overcome evil with good.
Do not be deceived, God is not mocked; for whatever a man sows, that he will also reap. For he who sows to his flesh will of the flesh reap corruption, but he who sows to the Spirit will of the Spirit reap everlasting life. And let us not grow weary while doing good, for in due season we shall reap if we do not lose heart. Therefore, as we have opportunity, let us do good to all, especially to those who are of the household of faith. Galatians 6:7-10

15 Let no man count them as small things; for there is much which lieth in futurity, pertaining to the saints, which depends upon these things. 16 You know, brethren, that a very large ship is benefited very much by a very small helm in the time of a storm, by being kept workways with the wind and the waves.
Note: Believers are to be law abiding citizens.
Therefore, submit yourselves to every ordinance of man for the Lord’s sake, whether to the king as supreme, or to governors, as to those who are sent by him for the punishment of evildoers and for the praise of those who do good. For this is the will of God, that by doing good you may put to silence the ignorance of foolish men— as free, yet not using liberty as a cloak for vice, but as bondservants of God. Honor all people. Love the brotherhood. Fear God. Honor the king. 1 Peter 2:13-17

17 Therefore, dearly beloved brethren, let us cheerfully do all things that lie in our power; and then may we stand still, with the utmost assurance, to see the salvation of God, and for his arm to be revealed.
Note: Believers will overcome evil with good.
Finally, all of you be of one mind, having compassion for one another; love as brothers, be tenderhearted, be courteous; not returning evil for evil or reviling for reviling, but on the contrary blessing, knowing that you were called to this, that you may inherit a blessing. 1 Peter 3:8-9