“Because Jewish law requires legal matters to be established on the basis of two witnesses, Moses called upon both heaven and earth to bear witness that he indeed had conveyed this song to the people.

…in order for the message to endure, the Jew must evoke both heaven and earth.

The purpose of the Jewish people—the objective of all Jewish history—is the marriage of heaven and earth….

We each have a ‘heaven’ and ‘earth’ within us. Part of us seeks the transcendent and the spiritual, while another part is drawn to the earthly and the physical. 

…

On Yom Kippur we reach to the heavens, we connect to the core of our soul and feel unified with G-d. But, just as we reach the climax of the holiness of Yom Kippur, we transition to preparation for the holiday of Sukkot, when we celebrate the physical bounty with which we have been blessed:

… We are ‘close to heaven,’ we connect to our angelic, spiritual, and pure soul on Yom Kippur, and then we connect that spiritual awareness to the field, to sanctify and uplift the blessings of everyday life.”