Columbia subject headings:
Bible. New Testament--Criticism, interpretation, etc.
Christianity--Essence, genius, nature.
Church history--Primitive and early church, ca. 30-600.
Harvard subject headings:
Christianity--Origin
Church history--Primitive and early church, ca. 30-600
Church history--Primitive and early church, ca. 30-600.
Missions--Biblical teaching
Paul, the Apostle, Saint
Princeton subject headings: