Sefer Yetzirah
The earliest surviving Hebrew text of Jewish mysticism, the 'Book of Formation', which describes how the world was created through the twenty-two letters of the Hebrew alphabet and the ten sefirot, and sets out paths by which the mystic may emulate that act. Its opening lines attribute it to the patriarch Abraham, though scholars date its present form to roughly the second to the sixth century CE, and it circulated in short and long recensions. The text maps the letters and the sefirot onto the cosmos, the year, and the human body, presenting creation as an act of speech and counting. It shape