“Even more extravagant than the Muslims were the Jews. The first chapter of the Jewish Bible contains the famous sentence: And God said, ‘Let there be light,’ and there was light;” the Kabbalists argued that the virtue of that command from the Lord came from the letters of the words.
The Sepher Yetzirah (Book of the Formation), written in Syria or Palestine around the sixth century, reveals that Yehovah of the Armies, God of Israel and God Omnipotent, created the universe by means of the cardinal numbers from one to ten and the twenty-two letters of the alphabet. That numbers may be instruments or elements of the Creation is the dogma of Pythagoras and Iamblichus; that letters also are is a clear indication of the new cult of writing.
The second paragraph of the second chapter reads: “Twenty-two fundamental letters: God drew them, engraved them, combined them, weighed them, permutated them, and with them produced everything that is and everything that will be.” Then the book reveals which letter has power over air, and which over water, and which over fire, and which over wisdom, and which over peace, and which over grace, and which over sleep, and which over anger, and how (for example) the letter kaf, which has power over life, served to form the sun in the world, the day Wednesday in the week, and the left ear on the body.”
–Jorge Luis Borges, “On the Cult of Books.”