Matthew 16:12

συνῆκαν, they now understood, at least to the extent of seeing that it was a question not of loaves but of something spiritual. One could wish that they had understood that from the first, and that they had asked their Master to explain more precisely the nature of the evil influences for their and our benefit. Thereby we might have had in a sentence a photograph of Sadducaism, e.g. διδαχῆς, “doctrine”; that was in a general way the import of the ζύμη. But if Jesus had explained Himself He would have had more to say. The dogmas and opinions of the two parties in question were not the worst of them, but the spirit of their life: their dislike of real godliness.