The Book of Creation originated in the early Middle Ages and represents the first systematic summary of cosmological speculations based on a pronounced mysticism of letters and numbers in the Hebrew language. It describes the structure of the world from the 32 hidden paths of wisdom, which are composed of the 10 Sefirot, the primal numbers or powers, and the 22 letters of the Hebrew alphabet. In accordance with the ancient concept of the macro- and microcosm, certain groups of letters are related to space, time, and the human world. The emphasis on the dimensions of space and time recalls modern theories about the origin of the cosmos, while for the author of the Sefer Yetzirah, the ethical aspect of the act of creation (good and evil, innocence and guilt) is also important. The theological center of the book is the confession to.