It is not sinful to desire God’s justice or the justice of the governing authorities that wield God’s sword (Rom. 13:1-7) or Christ’s justice through biblical discipline in the local church (Matt. 18:15-20). But, when justice is not rendered, we must trust that vengeance is God’s, He will repay, says the Lord (Rom. 12:9). In other words, the sins of others in refusing to carry out God’s demands for justice does not justify our own sinful attempts to take justice into our own hands through slander, speculation, assuming the worst, etc. A lack of Christian love is never justified (1 Cor. 13:1-8). If we have not love for the guilty, we are nothing! If we’re willing to sin to get “justice,” it’s not justice we seek; it’s revenge.
“Bless those who persecute you; bless and do not curse them. Rejoice with those who rejoice, weep with those who weep. Live in harmony with one another. Do not be haughty, but associate with the lowly. Never be wise in your own sight. Repay no one evil for evil, but give thought to do what is honorable in the sight of all. If possible, so far as it depends on you, live peaceably with all. Beloved, never avenge yourselves, but leave it to the wrath of God, for it is written, “Vengeance is mine, I will repay, says the Lord.” To the contrary, “if your enemy is hungry, feed him; if he is thirsty, give him something to drink; for by so doing you will heap burning coals on his head.” Do not be overcome by evil, but overcome evil with good” (Rom. 12:14-21).
“Love is Patient and Kind” (1 Cor. 13:4).
In the book of Jonah, we learn of Jonah the prophet who fled from God’s command to preach to Nineveh, Israel’s arch-enemy at the time. God told Jonah to preach of His coming wrath towards Nineveh. But Jonah ran away to Tashish instead. He was later swallowed by a great fish sent by God, vomited up on the shore, and then he went to Nineveh in obedience to God. He preached, “Yet forty days, and Nineveh shall be overthrown” (Jonah 3:4)! Nineveh responded by repenting and calling out for God’s mercy (Jonah 3:6-10). Therefore, God showed them mercy and spared them. Jonah was furious. He argued, “That is why I made haste to flee to Tarshish; for I knew that you are a gracious God and merciful, slow to anger and abounding in steadfast love, and relenting from disaster” (Jonah 4:2). Jonah fled to Tarshish because he did not want Nineveh to repent and receive God’s mercy. He wanted God to wipe them out. He desired revenge, not repentance (Jonah 3:1-4:11). God is God. He can show wrath to whom wrath and mercy to whom mercy, due to His holy and loving character. His ways are always just.