Columbia subject headings:
Harvard subject headings:
Church history--Primitive and early church, ca. 30-600
Elite (Social sciences) in the Bible.
Equestrian order (Rome)
Nobility--Rome
Princeton subject headings:
Christians--Rome.
Church history--Primitive and early church, ca. 30-600.
Elite (Social sciences)
Estates (Social orders)--Rome.
Social classes--Rome.