66 or 49(7x)
Hellenistic 66
or
Godly 49 (7 x 7)
Originally in the ancient times before the modern Bibles, the Old Testament count was
22 books.
27 in the New Testament.
Making the Book count,
49 = 7 x 7
Jerome’s Twenty Two Books: The Alphabet of the Doctrine of God - Ancient Hebrew Poetry (typepad.com)