See that no one returns evil for evil to anyone, but always follow after that which is good, for one another, and for all.
follow that which is good: Not only should the Christian not seek retribution for wrongs, he has the positive duty to be "actively friendly in the face of hostility" (Morris 106). And our goodness is not restricted to the fellowship of the faithful. The duty imposed by this verse applies "among yourselves." There is, at the same time, a concomitant duty "to all men." "Follow" is much too tame in translating the original. It really means to pursue vigorously and is often translated persecute. This strong term emphasizes the duty to do good, being associated in scripture with love (1 Corinthians 14:1); righteousness (1 Timothy 6:11); and peace (Hebrews 12:14).