Why trimmest - Maurer translates, “How skilfully thou dost prepare thy way,” etc. But see 2Ki 9:30. “Trimmest” best suits the image of one decking herself as a harlot.
way - course of life.
therefore - accordingly. Or else, “nay, thou hast even,” etc.
also ... wicked ones - even the wicked harlots, that is, (laying aside the metaphor) even the Gentiles who are wicked, thou teachest to be still more so [Grotius].