Do good (agathopoiēte). Third-class condition, ean and present subjunctive. This verb not in old Greek, but in lxx.
Even sinners (kai hoi hamartōloi). Even the sinners, the article distinguishing the class. Mat 5:46 has “even the publicans” and Mat 5:47”even the Gentiles.” That completes the list of the outcasts for “sinners” includes “harlots” and all the rest.