The Four Worlds, sometimes counted with a prior stage to make Five Worlds, are the comprehensive categories of spiritual realms in Kabbalah in the descending chain of Existence.
Jacob's vision in Genesis 28:12 of a ladder between Heaven and Earth. In Kabbalistic interpretation, the Sulam-ladder's four main divisions are the Four Worlds and the angelic hierarchy embody external dimensions of the lights-vessels, while souls embody inner dimensions
Ezekiel's Tomb in Iraq. Ezekiel's vision of the Divine Merkabah-Chariot, and Isaiah's vision of the Kisei HaKavod-Throne of Glory, are related in Kabbalah to beholding the Four Worlds from Yetzirah, and from Beriah