Book of Genesis

Genesis divides at chapter 12 so cleanly that readers have noticed the seam for as long as there have been readers. Chapters 1 to 11 work at the scale of the whole species: two accounts of creation, a garden and an expulsion from it, the first killing, a genealogy that runs in centuries, a flood that resets the world, and a tower whose collapse scatters languages across the earth. Nobody is followed for long, and the interest is in humanity as such. From chapter 12 the aperture narrows to a single household and stays there for thirty-nine chapters, following Abraham, Isaac, Jacob and Joseph through famine, migration, deception and inheritance disputes at a pace measured in individual lifetimes.

The joint is not concealed. A repeated formula, these are the generations of, appears about ten times and works as the structural hinge of the book, handing the narrative from one line to the next and quietly discarding the branches it will not follow. Ancient readers used the formula as a table of contents, and modern editions still take their major divisions from it.

What holds the halves together is a promise, stated to Abraham at chapter 12 and restated to each successor: land, descendants, blessing. The book ends with none of the three secured. The family is in Egypt, numerous but not a nation, and the only land it owns is a burial cave bought at full price so that nobody could later call it a gift. Genesis closes on a coffin, which is why it reads as the first movement of something rather than as a finished story.

Jewish and Christian tradition assigns the whole Torah to Moses, and the attribution is old enough to be treated as part of the text rather than as a claim about it. Genesis makes no such statement about itself: it names no author anywhere, and unlike the prophetic books it carries no superscription.

Readers noticed difficulties early. Genesis 36 lists kings who reigned in Edom before any king reigned over Israel, which is written from a vantage point after there were Israelite kings. Places are called by names the narrative elsewhere says were given later. The twelfth-century commentator Abraham ibn Ezra gestured at a set of such verses without spelling out the conclusion, telling the reader who understands to keep silent. Spinoza spelled it out in 1670 and was answered with a ban rather than an argument.

The technical observation that opened the modern discussion was simpler than any of that: the book alternates between two names for God, and the passages using each name differ in vocabulary, in style and sometimes in the story they tell. Two accounts of creation sit in the first two chapters; the flood narrative counts the animals twice, and differently. A mid-eighteenth-century French physician, Jean Astruc, proposed that Moses had worked from earlier written memoirs, which was intended as a defence of Mosaic authorship and became the seed of its dismantling.

Julius Wellhausen synthesised a century of that work into the documentary hypothesis, which dated the sources against a reconstructed history of Israelite religion rather than the reverse. The particular four-source scheme is now contested from several directions at once. That the book is composite, and later than Moses, is not.