{Except ye turn and become} (ean m(8820)straph(8874)e kai
gen(8873)the). Third-class condition, undetermined but with prospect
of determination. Straph(8874)e is second aorist passive
subjunctive and gen(8873)the second aorist middle subjunctive. They
were headed in the wrong direction with their selfish ambition.
"His tone at this time is markedly severe, as much as when He
denounces the Pharisaism in the bud He had to deal with" (Bruce).
The strong double negative ou m(8820)eiselth(8874)e means that they
will otherwise not get into the kingdom of heaven at all, let
alone have big places in it.