Why, herein is the marvel (en toutwi gar to qaumaston estin). This use of gar (ge + ara, accordingly indeed) to bring out an affirmation from the previous words is common enough. "Why in this very point is the wonder" (qaumaston, old verbal adjective from qaumazw as in Matthew 21:42 ). The man is angry now and quick in his insight and reply. You confess your ignorance of whence he is, ye who know everything, "and yet (adversative use of kai again) he opened my eyes" (kai hnoixen mou tou opqalmou). That stubborn fact stands.