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Tikkun 21 – 201
“…וְהִנֵּה-רַעַשׁ, וַתִּקְרְבוּ עֲצָמוֹת, עֶצֶם אֶל-עַצְמוֹ. …”
“there was a noise, and behold a commotion, and the bones came together, bone to its bone. ”
Bone is עֶצֶם, which means strength and power. The bones hold the body and give it strength, the soul gives it the power to move.
When we make the sacrifices, that are the prayers for others, the essence of the Light comes down and unifies our three columns in the body on the spiritual level.
The brain gets the blessings and, heart receives the holiness and the lungs get the unification.
The lungs unify the right and the left side of the body as one that represent the central column. It connects the Fire and Water together with the Air, אור-י, אויר , which represents the Light that comes to connect with the blood system and the soul level of Nefesh in the body.