"The books of the Old Testament are generally divided into four classifications:
1. The Pentateuch, or The Books of the Law.
The word “Pentateuch,” is from two Greek words that mean “Five Books”, and refers to the first five books of the Bible: Genesis, Exodus, Leviticus, Numbers and Deuteronomy, which our Lord Himself ascribed to Moses.
In these books the Law of Moses is found, and so they are often referred to collectively as the Law. For example, “the law and the prophets”, Mat 7:12. The Pentateuch introduces that which is taught in all God’s Word, it shows man’s fallen condition and his need of redemption, and it reveals the loving grace of God to provide a covering for sin through the blood of the altar and His assurance of a Redeemer.
Genesis is the book of beginnings.
Exodus, the book of deliverance.
Leviticus, the book of worship.
Numbers, the book of experience.
Deuteronomy, the book of instruction, or exhortation.
2. The Books of History.
While the whole of the Old Testament is, in a sense, historical, there are twelve books in particular, namely, Joshua to Esther, which record the history of the nation of Israel during approximately 1000 years, from about 1450 to 445 B.C.
In this period the nation entered Palestine, the promised land of blessing. Israel was ruled by judges and then later by kings in this era. Israel was divided into two kingdoms, the northern and southern kingdoms, Israel and Judah respectfully. During this time because of sin Israel was conquered by Assyria and Judah later fell into captivity to Babylon. Though a remnant was later restored to the land, this was not the fulfillment of the covenant of Deut 30, as the nation was dispersed again in A.D. 70 at the hands of the Romans. The final national regathering is still future and will occur after the Second Advent of our Lord when He establishes His Millennial reign.
3. The Books of Poetry.
There are six poetical books, Job, Psalms, Proverbs, Ecclesiastes, Song of Solomon and Lamentations. Although many of these writings are in lyric style as songs or poems, it does not mean that the writers, (primarily Job, David and Solomon), made all lines rhyme with each other, or that the lines of the original writings can be read rhythmically. The writings referred to are rather the expressions, under the leading of the Holy Spirit, of the spiritual experiences of their writers. In the Revised Versions all of these books, except for two and a half chapters in Job, (1-2, 42), and much of the book of Ecclesiastes, are printed in poetic rather than prose form. Parts of Ecclesiastes, (1, 3, 7) are poetic. (Part Two)