Paul gives good advice at the end of this chapter. These are not new laws. Most deal with generalities. All deal with interactions with people. If I want to know what to do with others, I need to read these.
I am in part encouraged, delighted, and compelled. I see places I could have done better. Yet these verses are not about comdemnatuon for past faults. These are purely about the present. They deal with setting my mind and heart to do right.
Perhaps verse 24 is a good summary, “Do not be overcome by evil, but overcome evil with good.”