In the beautiful imagery of the Zohar , the Bride and the Bridegroom, the Knesset Yisrael, and the Holy Blessed One, come to the wedding canopy on the day of Shavuot, the day of the Giving of the Torah. The previous night is spent by the companions of the Bride in studying and practicing the Torah, all through the night.
However, Rabbi Ashlag, in his tremendous teaching, the Perush haSulam on the Zohar, teaches that the essence of Shavuot and the essence of the redemption are the same. Likewise the night in which the Bride joins with Her Creator, not only refers to the night before Shavuot, but refers to the long days of exile when the forces of separation rule over us, turning us away from our Maker. Yet the Zohar teaches that it is precisely in this time of the concealment of God’s light that the souls join with the Holy Blessed One.
From the Ma’amar Leilah de Kalah, Perush haSulam, vol 1 Zohar,
With grateful thanks to Dvorah Hoffman and the chevrutas in Tsfat for enabling this learning.