when the Bible was compiled into its current collection of books, the Eastern churches did not want Revelations.
Revelations is not part of any Orthodox services to this very day and it is rarely referenced except on occasion.
But they allowed it to be included in exchange for the removal a require for a dozen or so books the Latin church wanted in.
And so the Bible they agreed to is the book I grew up with as methodist when I was a kid; I thought it was just a whole book and didn’t know really about its history until I had a few years as an Eastern Orthodox – it was fun getting deep into it