1 Thessalonians 5:15

See that none render unto any one evil for evil [Christians are repeatedly bidden to return good for evil (Matthew 5:38-48; Romans 12:19-21; 1 Peter 2:18-25). "See that" puts the Thessalonians on notice that the practice of retaliation or revenge was apt to creep in unawares, and so it was, for persecution wakens revenge as fire kindles fire, thus making two wrongs out of one]; but always follow after that which is good, one toward another, and toward all. ["Make," says the Cambridge Bible, "the good of your fellow-men your constant pursuit, and let no injury or unworthiness on their part turn you aside from it. Revenge must be cherished neither toward those within nor those without the church, but good must be rendered to all-- Galatians 6:10]