The Old Testament is not a single book but a library — thirty-nine books in the Protestant canon, gathered over roughly a millennium, holding law and genealogy, war chronicle and love poem, lament and vision. What binds them is a single relationship: the covenant between God and the people of Israel. The Old Testament is the long testimony of that covenant — made, broken, judged, and renewed — and it ends leaning forward, toward a restoration it announces but does not itself reach.
Christian Bibles arrange these books in four movements. The Torah, or Pentateuch (Genesis through Deuteronomy), lays the foundation: creation, the patriarchs, the exodus, and the Law. The historical books (Joshua through Esther) trace the nation’s life in the land — conquest, judges, the rise of the monarchy, its division, and its collapse. The wisdom and poetry (Job through Song of Songs) is the literature of devotion and hard questioning, where Israel prays, argues, and grieves. The prophets (Isaiah through Malachi) are the covenant’s conscience, speaking judgment and hope. (The Hebrew Bible orders the same books differently, in three parts — Torah, Prophets, and Writings.)
Several arcs run through the whole. Creation gives way to a fall and a flood (Genesis 1–11). Then the lens narrows to one family: God’s promise to Abraham of land, descendants, and blessing — Genesis 12:1–3↗ — becomes the seed of everything after. The exodus from Egypt and the covenant at Sinai, with its Ten Commandments (Exodus 20↗), forge a people. Conquest, judges, and kings follow, climaxing in David and then fracturing; the catastrophe of the Babylonian exile, and the partial return that follows, close the story.
Who wrote these books, and when, is genuinely contested. Tradition attributes the Torah to Moses and assigns other books to the figures they name. Modern critical scholarship, especially since the Documentary Hypothesis associated with Julius Wellhausen in the nineteenth century, reads the Pentateuch as a composite woven from several sources over centuries, reaching its final form during or after the exile. Religious traditions hold these views differently; SumBible reports the spectrum rather than arbitrating it.
What is not in dispute is the Old Testament’s orientation. It is unfinished on purpose. Its prophets keep reaching past their own horizon — toward a new David, a servant who suffers for others (Isaiah 53↗), a covenant written on the heart (Jeremiah 31:31–34↗), a restoration still to come. For Christian readers, that forward lean is the doorway to the New Testament; for Latter-day Saints, the Book of Mormon stands beside it as a second witness of the same covenant. Read on its own terms, the Old Testament is Scripture — but it is Scripture that points beyond itself.