Columbia subject headings:
Gregory, Sinaites, Saint, approximately 1265-1346.
Hesychasm.
Jesus Christ--Transfiguration.
Orthodox Eastern Church--Doctrines.
Harvard subject headings:
Gregory, Sinaites, Saint, approximately 1265-1346
Hesychasm.
Jesus Christ--Transfiguration.
Orthodox Eastern Church--Doctrines.
Princeton subject headings: