Columbia subject headings:
Harvard subject headings:
Purity, Ritual--Christianity--History of doctrines.
Princeton subject headings:
Asceticism--History--Early church, ca. 30-600.
Bible--Criticism, interpretation, etc.--History--Early church, ca. 30-600.
Chastity--History of doctrines--Early church, ca. 30-600.
Food--Religious aspects--Christianity.
Food--Religious aspects--Judaism.
Jewish Christians--History--Early church, ca. 30-600.
Purity (Ethics)
Purity, Ritual.