17. So I am not really the one who does this thing; rather it is the sin that lives in me.
18. I know that good does not live in me — that is, in my human nature. For even though the desire to do good is in me, I am not able to do it.
19. I don't do the good I want to do; instead, I do the evil that I do not want to do.
20. If I do what I don't want to do, this means that I am no longer the one who does it; instead, it is the sin that lives in me.