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Tikkun 69 – 88
Adam was left with the last H ה and the Zohar explains that by referring to the verses in Genesis 3:9 and Lamentation 1:1
“ וַיִּקְרָא יְהוָה אֱלֹהִים, אֶל-הָאָדָם; וַיֹּאמֶר לוֹ, אַיֶּכָּה ”
“And YHVH God called unto the man, and said unto him: ‘Where art thou?’ ”
The word for ‘Where art thou?’, אַיֶּכָּה is the first word in Lamentation 1 “אֵיכָה יָשְׁבָה בָדָד, הָעִיר רַבָּתִי עָם–הָיְתָה, כְּאַלְמָנָה ”, “How doth the city sit solitary, that was full of people! How is she become as a widow!”
The word split to two איך (How) and ה, meaning, how is Malchut, which is H ה , is in solitary, like a widow without her husband, the light.
With the disconnection from the Tree of Life, Adam and we lost the access to its fruits. The connection was corrected by three patriarchs. Abraham followed the ways of God and merited to receive the letter Hה added to his name. Isaac corrected the Y י with his readiness to give his soul for his father and the Light. God gave Isaac his name that starts with the letter Y י.
Jacob corrected the Vav ו. The three patriarchs established the connection of the three columns of the Tree of Life to Malchut. They also represent the three Vavs that begin the three verses of the 72 names from Exodus 14:19-21.
In every kabbalistic connection we include Abraham, Isaac and Jacob to open the channels of the Tree of Life for us.
Without connection to the three columns, we cannot draw life force to the Hה of Malchut and our Tree remains ‘fruitless’.