Google the phrase 'canon of the catholic bible'.

Most if not all of the books of the New Testament were originally written in greek but none of the books were written at the same time. And while called books, we can almost think of them as chapters in the book we now refer to as the bible. Additionally, there were quite a number of these books being passed around the Mediterranean world not all of which made it into the current bible. As the Roman Catholic church became more pronounced they eventually held a council to determine which books would belong in the official church canon. These works became the official Catholic Church canon. Important to note, that not all of the works in the catholic bible were considered the direct word of God...but the church council viewed them as inspirational enough that they did indeed belong. This is why today, a catholic bible contains more new testament books than its protestant counter-part. Very long story short...once the church finalized on its canon of scripture, the church would then release the official catholic church's version of the now Latin bible called the Vulgate. Keeping in mind, the above is approximately 1200 or so years of history compacted into a Reddit post.