Why are the sections of the bible called "books"? Some of these books are extremely short.?

The generic term was applied to all of the documents included in the Bible

- which at one time were, for the most part, separate from each other, each written on a scroll.

"Document" is a more precise term in English...but the tradition "book" was carried over from ancient times, probably from translation from Latin. The term "the Bible" itself was originally in Latin plural, "biblia sacrorum", translated as "the holy books", so applying the term "books" to all of the Biblical documents probably stems from that ancient terminology.

You can get more precise and call some "epistles", some "gospels", etc. (as is often done, in fact).

The letters are even shorter.

Sixty-six individual books from Genesis to Revelation make up the Bible canon. The choice of these particular books, and the rejection of many others, is evidence that the Divine Author not only inspired their writing but also carefully guarded their collection and preservation within the sacred catalog. (See APOCRYPHA; CANON.) Thirty-nine of the 66 books, making up three quarters of the Bible’s contents, are known as the Hebrew Scriptures, all having been initially written in that language with the exception of a few small sections written in Aramaic. (Ezr 4:8–6:18; 7:12-26; Jer 10:11; Da 2:4b–7:28) By combining some of these books, the Jews had a total of only 22 or 24 books, yet these embraced the same material. It also appears to have been their custom to subdivide the Scriptures into three parts—‘the law of Moses, the Prophets, and the Psalms.’ (Lu 24:44; see HEBREW SCRIPTURES.) The last quarter of the Bible is known as the Christian Greek Scriptures, so designated because the 27 books comprising this section were written in Greek. The writing, collecting, and arrangement of these books within the Bible’s canon also demonstrate Jehovah’s supervision from start to finish.—See CHRISTIAN GREEK SCRIPTURES.

Subdividing the Bible into chapters and verses (KJ has 1,189 chapters and 31,102 verses) was not done by the original writers, but it was a very useful device added centuries later. The Masoretes divided the Hebrew Scriptures into verses; then in the 13th century of our Common Era chapter divisions were added. Finally, in 1553 Robert Estienne’s edition of the French Bible was published as the first complete Bible with the present chapter and verse divisions.

The 66 Bible books all together form but a single work, a complete whole. As the chapter and verse marks are only convenient aids for Bible study and are not intended to detract from the unity of the whole, so also is the sectioning of the Bible, which is done according to the predominant language in which the manuscripts have come down to us. We, therefore, have both the Hebrew and Greek Scriptures, with “Christian” added to the latter to distinguish them from the Greek Septuagint, which is the Hebrew portion of the Scriptures translated into Greek.

It's a general term, suitable because the word "Bible" really suggests a library. And many of the Bible books were circulated as separate books in early times. (Some of the shortening--divisions of books like Samuel, Kings, or Chronicles into two parts--was done later, in translations.)

Historically, the twelve Minor Prophets (Hosea, Joel, Amos, Obadiah, Jonah, Micah, Nahum, Habakkuk, Zephaniah, Haggai, Zechariah, Malachi) were actually compiled together as one book. That was because they were short works, and scrolls have practical length limits for use and storage.

The New Testament letters are often called "books" only because that's the convenient general term for subdivisions of the Bible. Many versions will head other sections with "book" (as in the Book of Psalms) but describe them in headings as "the Epistle of so-and-so to so-and-so," because we know they don't really count as books.

It's colloquial. The Bible itself means "scroll", but over time it became to mean 'book'. THe same is true with the Epistles and minor prophets. They call them 'books' colloquially, but properly they should be 'scrolls' or what they simply are; epistles, for example.

The FACT that you a;ready KNOW that the Bible is divided into sections called "books" is a start.

NOW, why don't you start reading the section called "John"

then when you've completed that read the book of Genesis . . .

P.S. Every Christian I personally know, believes that the Bible is 100% God's truth.

When the "books" were written, they were scrolls, but when they were copied into codecs - and codecs were frequently small - they became books, regardless of size.

no

because the people that wrote them were short @rses

Goodness know that there's no such thing as a short book.