"I the Greek Church never added them: it used them all along."
Do you include the books of Esdras and Manasseh?
Whe I was at seminary in Denver one of the fellows I studied with was Brad Nassif. A great mind and terrific believer. Have you heard of Him?
"Bradley Nassif has been a courageous and enthusiastic pioneer of Orthodox-evangelical dialogue around the world. Dr. Nassif holds a Ph.D. from Fordham University, where he was one of the last students of the late Fr. John Meyendorff. He also holds an M.Div. from St. Vladimir's Seminary; an M.A. in New Testament Studies, Denver Seminary; an M.A. in European History, Wichita State University; and a B.A. in Religion and Philosophy, Friends University (Wichita, KS). Dr. Nassif is currently professor of Biblical and Theological Studies at North Park University (Chicago"
All Orthodox include Esdras (Ezra), some include 1 Esdras and only Russian (and non-Chaledonian Ethiopian Orthodox) include 2 Esdras.
Likewise, some (the Church in Jersualem for sure) include the Prayer of Manasseh, but the Greek editions don't. I would be curious to find out what books are used on Mt. Athos.
I have never heard of Dr. Bradly Nassif. He certainly seems to have an impressive educational background in theology.