>>508170274
the traditional Orthodox OT is 50 books, which were translated into an older form of Slavonic by Cyril and Methodius, and other Old Church Slavonic versions with a blessing from the Metropolitan of Moscow starting around the 1500s to 1800s. normally it's just a difference in naming convention as Ezra is usually numbered 1 Esdras, but if it also has Ezra and 2 Esdras it was incorporated in later
+27 NT books comes to a total 77-book Orthodox Bible