Columbia subject headings:
Clergy--History.
Luther, Martin, 1483-1546.
Ordination--History of doctrines--16th century.
Priesthood, Universal.
Harvard subject headings:
Luther, Martin, 1483-1546
Ordination--History--16th century.
Pastoral theology--History--16th century.
Priesthood, Universal--History--16th century.
Princeton subject headings: