“אֲדֹנָי יְהוִה, אַתָּה הַחִלּוֹתָ לְהַרְאוֹת אֶת-עַבְדְּךָ, אֶת-גָּדְלְךָ, וְאֶת-יָדְךָ הַחֲזָקָה–אֲשֶׁר מִי-אֵל בַּשָּׁמַיִם וּבָאָרֶץ, אֲשֶׁר-יַעֲשֶׂה כְמַעֲשֶׂיךָ וְכִגְבוּרֹתֶךָ”
“’O YHVH GOD, You have begun to show Your servant Your greatness and Your strong hand; for what god is there in heaven or on earth who can do such works and mighty acts as Yours?”
“Your greatness” is the aspect of the Right and Aaron. “Your strong hand” is the aspect of the Left and Nachshon (Nachshon was the one who jumped first into the water when Moses split the Red Sea). The Zohar explains that we learn from that that Moses was the beginning of the world and not Jacob. And if we ask who is at the end, the answer is; the King Mashiach is the one, because only then you find completion in the world.
Why Moses is the beginning of the world
Moses has the soul of Abel, who is the pure child of Adam and Eve, who were the first father and mother and the aspect of Chokmah and Binah.
The unification of Chokmah and Binah forms the Sefira of Da’at. Da’at, means ‘knowledge’.
Genesis 4:1 “and Adam knew Eve, his wife“ Moses has the level of Da’at because he carries the soul of Abel, the original aspect of Da’at. Cain was first but because the Snake ‘contaminated’ Eve’s vessel, his soul was ‘grounded’. Genesis 4:2 “Cain was a tiller of the ground.”
Mashiach and the unification of upper and lower
Because Moses is at the upper gate he will usher Mashiach to the world through the Central column, unifying the four worlds of Atzilut (Emanation), Beriah (Creation), Yetzirah (formation) and Asiyah (Action).
Mashiach is called King because he has the soul level of Yechida, which comes from Keter (Crown). After he removes all negativity from the world, the vessel of Malchut will be pure to receive the Light of Binah.
Then the spiritual worlds of Atzilut, Beriah, Yetzirah and Asiah will be in peace, completion and one unified state as we learn from the verse in Zechariah 14:9
“וְהָיָה יְהוָה לְמֶלֶךְ, עַל-כָּל-הָאָרֶץ; בַּיּוֹם הַהוּא, יִהְיֶה יְהוָה אֶחָד–וּשְׁמוֹ אֶחָד”
“And YHVH will be king over all the earth. On that day YHVH will be one and his name one.”