Messiah (Moshiach, Heb.) n.

The messiah is a spiritual force. It is the Light that penetrates self-aimed human desires to correct them so that they become altruistic, that is to say, identical to those of the Creator. In our world all spiritual forces are manifested in material garments.

For example Rabbi Shimon, the Ari and Yehuda Ashlag (Baal HaSulam) represent a spiritual force radiating the Light of correction. This force appears in our world as a man, a Kabbalist, a professor, a book author. Therefore, the Messiah is a guide who becomes progressively accepted by humanity. Humanity will follow the path pointed by the Messiah because evil and suffering will be felt by all, and there will be no other way out. People stand on a level where they cannot imagine the coming of the Messiah as a Light but only as a human leader. But for Kabbalists, the Messiah is the spiritual force of correction (in the image of the world of AB SAG).

Rav Michael Laitman, PhD in “Selected Topics in Kabbalah“