והבריח התיכן בתוך הקרשים מבריח מן הקצה אל הקצה
The Briach HaTichon was an amazing component of the Mishkan. It basically kept the walls together, thus stabilizing the Mishkan structure. The Targum Yonasan ben Uziel explains how this pillar functioned. Avraham Avinu planted a tree in Beer Sheva. When Klal Yisrael walked through the miraculously split Red Sea, the angels uprooted the tree and flung it into the sea. The tree floated on top of the water. At that point, an angel proclaimed, “This tree was originally planted by the Patriarch Avraham; it was at this tree that the Patriarch would pray and call out to others in the…