{What must we do?} (Ti poi(936d)en;). Present active
deliberative subjunctive of poie(935c), "What are we to do as a
habit?" For the aorist subjunctive (poi(8873)(936d)en) in a like
question for a single act see  Lu 3:10 . For the present
indicative (poioumen) of inquiry concerning actual conduct see
 Joh 11:47  (what are we doing?). {That we may work the works of
God} (hina ergaz(936d)etha ta erga tou theou). Final clause with
hina and the present middle subjunctive, "that we may go on
working the works of God." There may have been an element of
vague sincerity in this question in spite of their supercilious
attitude.