This is really good news. For centuries it was considered that his commentary on the Book of Hebrews had been discovered. The IVP edition of his Commentaries on Romans, Corinthians and Hebrews (published a few years ago) contained only the fragments of the commentary upon Hebrews which existed until then, and will become outdated now. More info: https://www.roger-pearse.com/weblog...a-cyril-of-alexandrias-commentary-on-hebrews/