Luke 20:21

ὀρθῶς, rightly, as in Luke 7:43, pointing not to sincerity in speech (λέγεις) and teaching (διδάσκεις) but to sound judgment = you always say the right thing; the second clause points to impartiality = you say the same thing to all; the third to sincerity = you say what you think. They describe an ideal from which their own masters were as remote as possible.