Sefer HaTemunah

[4] One of the main concepts in Sefer HaTemunah is that of the connection of the Sabbatical year (Hebrew: Shmita) with sephirot and the creation of more than one world.

[7]The Alter Rebbe goes so far to say that in the previous Sabbatical cycle there was a completely different world altogether, made up of its own unique purpose and even its own Torah, all in line with the Attribute of Chesed.

Sefer HaTemunah offers a description of the final Shmita, Malkuth (Kingdom), as "distinctly utopian" in character.

The author further stated that one Hebrew letter is missing altogether from the Torah, and will be revealed only when the world moves to the next sephira.

[11] According to Lawrence Kushner, author of The Book of Letters: A Mystical Alef-Bait, Sefer HaTemunah teaches that "every defect in our present universe is mysteriously connected with this unimaginable consonant", and that as soon as the missing letter is given to us, our Universe will be filled with undreamed of new words, the words that will turn repression into loving.

[12] From the Medieval flourishing of Kabbalah onwards, attempts were made to systemise its diverse teachings, especially commentaries on the elusive imagery of the Zohar.