God’s advice for personal disputes:
Luke 12
57 “Yes, and why, even of yourselves, do you not judge what is right? 58 When you go with your adversary to the magistrate, make every effort along the way to settle with him, lest he drag you to the judge, the judge deliver you to the officer, and the officer throw you into prison. 59 I tell you, you shall not depart from there till you have paid the very last mite.”

God’s requirements for governmental justice are introduced in the 10 Commandments and summed up by the “Golden Rule”:
Matthew 19
17b …if you want to enter into life, keep the commandments.”
18 He said to Him, “Which ones?”
Jesus said, “‘You shall not murder,” ‘You shall not commit adultery,’ ‘You shall not steal,’ ‘You shall not bear false witness,’ 19 ‘Honor your father and your mother,’ and, ‘You shall love your neighbor as yourself.’”

God’s authority is with governments to execute justice:
Romans 13
Submit to Government
1 Let every soul be subject to the governing authorities. For there is no authority except from God, and the authorities that exist are appointed by God. 2 Therefore whoever resists the authority resists the ordinance of God, and those who resist will bring judgment on themselves. 3 For rulers are not a terror to good works, but to evil. Do you want to be unafraid of the authority? Do what is good, and you will have praise from the same. 4 For he is God’s minister to you for good. But if you do evil, be afraid; for he does not bear the sword in vain; for he is God’s minister, an avenger to execute wrath on him who practices evil. 5 Therefore you must be subject, not only because of wrath but also for conscience’ sake. 6 For because of this you also pay taxes, for they are God’s ministers attending continually to this very thing. 7 Render therefore to all their due: taxes to whom taxes are due, customs to whom customs, fear to whom fear, honor to whom honor.

But when the justice of men fails, God will have the final say:
2 Thessalonians 1
God’s Final Judgment and Glory
3 We are bound to thank God always for you, brethren, as it is fitting, because your faith grows exceedingly, and the love of every one of you all abounds toward each other, 4 so that we ourselves boast of you among the churches of God for your patience and faith in all your persecutions and tribulations that you endure, 5 which is manifest evidence of the righteous judgment of God, that you may be counted worthy of the kingdom of God, for which you also suffer; 6 since it is a righteous thing with God to repay with tribulation those who trouble you, 7 and to give you who are troubled rest with us when the Lord Jesus is revealed from heaven with His mighty angels, 8 in flaming fire taking vengeance on those who do not know God, and on those who do not obey the gospel of our Lord Jesus Christ. 9 These shall be punished with everlasting destruction from the presence of the Lord and from the glory of His power, 10 when He comes, in that Day, to be glorified in His saints and to be admired among all those who believe, because our testimony among you was believed.

1. If you have a dispute with a neighbour, settle it yourself!
2. If there is a matter of criminal behaviour the government is obliged to judge according to God’s standards.
3. When the government fails we must endure and leave final justice to God.

1,2,3. Simple.