Two Wrongs Never Make One Right.
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 3:9 NKJV
He instructs us how to behave towards enemies. The apostle knew that Christians would be hated and evil-entreated of all men for Christ's sake; therefore, He warns them not to return evil for evil, nor railing for railing; but, on the contrary, when they rail at you, do you bless them; when they give you evil words, do you give them good ones; for Christ has both by his word and example called you to bless those that curse you, and has settled a blessing on you as your everlasting inheritance, though you were unworthy. To bear evils patiently, and to bless your enemies, is the way to obtain this blessing of God. Learn, To render evil for evil, or railing for railing, is a sinful unchristian practice; the magistrate may punish evil-doers, and private men may seek a legal remedy when they are wronged; but private revenge by duelling, scolding, or secret mischief, is forbidden Proverbs 20:22; Luke 6:27; Romans 12:17; 1 Thessalonians 5:15. To rail is to revile another in bitter, fierce, and reproachful terms; but for ministers to rebuke sharply, and to preach earnestly against the sins of the times, is not railing; all the prophets and apostles practised it, Isaiah 56:10; Zephaniah 3:3; Acts 20:29.
The laws of Christ oblige us to return blessing for railing. Matthew 5:44, Love your enemies, bless those that curse you, do good to those that hate you, and pray for those that persecute you. You must not justify them in their sin, but you must do for your enemies all that justice requires or charity commands. We must pity, pray for, and love those who rail at us. A Christian's calling, as it invests him with glorious privileges, so it obliges him to difficult duties. All the true servants of God shall infallibly inherit a blessing; they have it already in a great degree, but the full possession of it is reserved to another state and world