Tzav (Lev. 6:1-8:36) - Inauguration of the Almighty

(Lev. 8:33):"You shall not leave the entrance of the Tent of Meeting for seven days, until the day when your days of inauguration are complete, for you shall be inaugurated for a seven day period." What is the necessity for this inauguration period? Why does it not happen instantaneously? Inauguration means both appointment of a leader and investiture of that leader with the powers of office. The root of the word, inauguration, augur, means a "priest and official in the classic world"  and although some want to connect this word with the idolatrous practice of divining G-d's will from natural occurrences, the more likely root is augos or augere - "to increase, to prosper".
This fits well with the Hebrew word "Milu-im" which is translated as inauguration and literally means to fill. The function of the Tabernacle, or the Temple, is to connect Heaven and Earth and act as a window and a channel for G-d's will down here in this world. It is supposed to be a filling or "fueling" station for all those who seek G-d to come and experience the Divine and take that experience and inspiration with them out into the world. As in Ex. 40:34: "The cloud covered the Tent of Meeting, and the glory of Hashem filled the Tabernacle."

In Chassidus and kabbalistic texts, the idea of the Filling Light of Hashem is the tangible presence of G-d's life force in the physical world. All created beings are vivified and animated by this Filling Light. But since the life force of this physical world is very contracted and has to pass through many veils and filters in order to reach us, the light is compared to that of the moon, which also only projects a light that originates in the sun and is reflected from its surface down to us.

In the Messianic Age, though, the prophet Isaiah reveals that "The light of the moon will be like the light of the sun"(Isa. 30:26). This means that the wan physical life force that we experience now will be revealed as the very essence of Divine energy and light. Our "mundane" existence will be transformed into a luminary for all of creation to glory in. What we experience in exile as darkness and gross physicality, will turn to sources of spiritual inspiration and fulfilment. This is the process that began when G-d's presence began to fill the wooden beams and animal hides of the Tabernacle, transforming them into vessels for His Infinite Light, but transforming the physical is a very gradual process as it requires that darkness reveal its inner light. This process must come in stages as evidenced in the stages of G-d's revelation to His people, first through the Patriarchs, then through Moses, and only gradually through the Priests in the Tabernacle, and the Prophets and Sages of every generation.

Based on Likutei Torah of the Baal HaTanya, and Selected Talks of the Lubavitcher Rebbe Volume 12