The Zohar asks - why did they deserve to be blessed? And answers because Joseph preserved the sign of the holy covenant by not allowing himself to be seduced (by evil). The mystery of faith is a covenant with My chosen (righteous) one [1:231a] alluding to King David. He finds pleasure together with the souls of the righteous (Israel) and will not enter Jerusalem below until Israel enters the city. The world was not created until He took a certain stone -Foundation Stone, central point of the whole world. That stone, I set up as a pillar (matzevah) to be a house of God (Genesis 28:22). I am sending an angel before you.
|Jacob took 12 stones of that place and they become one|
(Vayechi 49:1) Jacob called for his sons and said, "Gather and I will tell you what will happen to you at the end of days". [1:234b] "Gather" - that I may tell you - "Ve-agidah", the mystery of wisdom! Why the mystery of wisdom? Because the word contains (g)imel followed by (d)alet, though sometimes (y)ud intervenes. He sought to reveal Israel's future, but his end of days vision dwindled.
Jacob was about to reveal that his stone-pillar would locate the permanent temple he had committed to build, but he couldn't explain what he saw. How do we know this? Because the non-incidental prophet Gad, also spelled (g)imel (d)alet connected him to this same mystery of wisdom. Some 670 years after Jacob, Gad authorized King David and all Israel's tribal leaders to locate an altar, on Mount Moriah at a different place than the place Jacob erected his stone-pillar. This confronting fact disturbed Jacob's vision.
The deeper mystery connected Efraim and brother Menashe to the northern tribes, collectively named Israel. They vehemently resisted re-locating the temporary temple from Shilo in Efraim's territory, where it had been abandoned to Jerusalem on the southern border of Benjamin's territory with Judah. When a plague killed 70,000 northern Israelite's a short-lived reprieve led them to unify and accept Gad's prophetic house of God relocation from the neck to the head of Mount Moriah.
Rivalry between Judah and Joseph (Efraim) over Benjamin would eventually lead to the destruction of two temples at Gad's location. Jacob saw beyond these destruction's, but the perpetual denial by Joseph and his brothers, including their silencing Benjamin about their kidnapping and selling Joseph disturbed Jacob's foretelling.
In 2008 the Hebrew year 5768, Jacob's stone-pillar was rediscovered at its location on Mount Moriah. It had been purposely buried, preserved for more than 3700 years. This time there will be no destruction.