“Seven of these shemittoth exhaust the productive power hidden in the seven “sefiroth of construction.” After 49,000 years, in the “great jubilee year,” the entire creation returns to its origin in the womb of binah, the “mother of the world,” just as according to the biblical ordinance concerning the jubilee year, after fifty years “liberty is proclaimed throughout the land,” and all things return to their original owner.
The cosmic jubilee of 50,000 years is therefore the most comprehensive cosmic unit; in it the power of the Creator takes full effect in the sequence of the seven fundamental units of shemittoth, which together constitute the yobhel, the cosmic jubilee.
In a broader framework, this doctrine displays a certain structural similarity to the ideas of Joachim of Fiore, who at the end of the twelfth century gave an historico-metaphysical twist to the Christian doctrine of the Trinity that attained considerable historical importance.
The fundamental idea was that the deity expresses itself not only in the three persons of the Trinity, but that its hidden power also acts in external creation and in the history of the world according to a sequence of three periods, each of which receives its character from one of the persons of the Trinity.
The hidden plenitude of the deity manifests itself therefore in the totality of the successive historical periods or states (status). In every status, the divine revelation assumes a different form. The period of the Father was characterized by the revelation of the Old Testament and the reign of the Mosaic law.
In the period of the Son, there began the reign of Grace, as expressed in the Catholic Church and its institutions. In the third period, on the other hand, whose advent he considered imminent, the Holy Spirit would reign alone; the mystical content of the Gospel would be completely revealed and either penetrate the external institutions of the Church or render them redundant.
This doctrine played a considerable role in the history of the Franciscan order and the sects of “spirituals.” It is not our purpose here to discuss in detail the historical implications of this doctrine, to which much scholarly attention has been devoted in recent decades, but merely to draw attention to an interesting kabbalistic analogy to Joachite doctrine with its strong Utopian elements and explosive power.”
Gershom Scholem, Origins of the Kabbalah, 1962, pp. 463-4.