Complex sentence: Philo read the Jewish Scriptures chiefly in the Septuagint Greek translation, though he understood Hebrew, as indicated by his numerous etymologies of Hebrew names which are along the lines of the etymologic midrash to Genesis and of the earlier rabbinism though not modern Hebrew philology.
Split into simpler sentences: Philo read the Jewish Scriptures chiefly in the Septuagint Greek translation. Philo understood Hebrew, as indicated by his numerous etymologies of Hebrew names which are along the lines of the etymologic midrash to Genesis and of the earlier rabbinism though not modern Hebrew philology.