Canst thou say (dunasai legein). Here Mat 7:4 has wilt thou say (ereis).
Beholdest not (ou blepōn). Mat 7:4 has “lo” (idou).
Thou hypocrite (hupokrita). Contrast to the studied politeness of “brother” (adelphe) above. Powerful picture of blind self-complacence and incompetence, the keyword to argument here.