The Bible consists of 66 books. 39 in the Old Testament (OT), and 27 in the New Testament (NT). They were written over a period of some 1400+ years by at least 40+ authors. Yet they all have the same theme: they speak of Christ ~ Jn.5:39
Originally the scriptures would have been written down on scrolls in columns, the idea of chapters and verses is quite a [relatively] modern innovation. Like verses and chapters, outlines were not in the original text; they present, however, a useful guide to the message of the book. The suggested outlines are offered as guide in studying the scriptures.
This sections covers the New Testament Books.
The apostle writes his final letter shortly before his death, encouraging his readers to remember and be steadfast in light of error.