Whensoever Moses is read (ηνικα αν αναγινωσκητα Μωυσης). Indefinite temporal clause with ηνικα an and the present passive subjunctive.

A veil lieth upon their heart (επ την καρδιαν αυτων κειτα). Vivid and distressing picture, a fact that caused Paul agony of heart (Romans 9:1-5). With wilful blindness the rabbis set aside the word of God by their tradition in the time of Jesus (Mark 7:8).