{What then?} (	i oun?). Another turn in the argument about
the excess of grace. {Shall we sin?} (hamartes(936d)en?). First
aorist active deliberative subjunctive of hamartan(935c). "Shall we
commit sin" (occasional acts of sin as opposed to the life of sin
as raised by epimen(936d)en t(8869) hamarti(8369) in verse  1 )? {Because}
(hoti). The same reason as in verse  1  and taken up from the
very words in verse  14 . Surely, the objector says, we may take
a night off now and then and sin a little bit "since we are under
grace."