By Christianity has an excessive element to it.
Christianity is “unfair” in the best sense of the word. Sinners who deserve punishment are delivered because of a substitute 2 Cor 5:21). God makes the sun rise on unbelievers just as on believers (Matt 5:45). Even when mankind invents all kinds of evil, God still makes some good come from it all (Gen 50:20). Christianity is “unfair” in the best sense of the word—God always shows more good than is fair.
Subsequently, those who are part of Christianity, Christians, ought to demonstrate a great unfairness in showing good to others. We tend to obsess over ‘fairness’ – repaying good with good, and evil with evil. Instead, Christians are called to concern themselves with doing excessive, even unfair, good.
Repay no one evil for evil, but give thought to do what is honourable in the sight of all.
Romans 12:17
If you owe somebody something good, then do it (Pro 3:27). Likewise, show the same goodness when you think you owe somebody evil in return. Don’t become like them in showing the evil intent of your heart, but rather demonstrate in unmistakable clarity the goodness of God that has flooded your heart. Always be courteous, smile to all, be gentle in your speech and messaging, be friendly without partiality. Show an act of kindness to friend and foe alike, pray for all mankind. Do not be easily offended, and certainly seek not to offend. Keep bitterness out, and be quick to forgive anyone.
One of the most striking drawn-out stories about good-for-evil is that of the second half of 1 Samuel. David has all the rights of a king, but won’t ever bring himself to do evil do the one doing him evil. Likewise also Christ, should have come to cause our deaths, but instead caused his own death so we can be saved.
Do what is honourable in the sight of all so that even evil-doers will recognise that you are a child of the excessively-good God.