Columbia subject headings:
Angels--Christianity.
Angels--Judaism.
Church history--Primitive and early church, ca. 30-600.
Worship (Judaism)
Worship.
Harvard subject headings:
Angels--Christianity--Congresses.
Angels--Judaism--Congresses.
Bible--Criticism, interpretation, etc.--Congresses.
Worship (Judaism)--Congresses.
Worship--Congresses.
Princeton subject headings: