Partie 13 · Chapitre 72

And this is the secret of the firmament that separates between the waters, which are the HG of Atik, which clothe in the skull and the brain, and the Tifferet separates between the two of them, and separates them and decides between them. For the Tifferet is the Vav in the name, as is known, and it is similar to the firmament stretched in the form of a Vav, as written, "He stretches out the heavens like a curtain," which is the secret of this membrane like the curtain. And the HG are like two Yods on the two sides of the Vav. And all three of them are thus the form of an Alef, about which it was said, "Let there be a firmament, and let it separate between the waters," which are the two Yods, the upper and the lower.