Putting Tefillin on Har Habayit

וְרָאוּ כָּל עַמֵּי הָאָרֶץ
כִּי שֵׁם ה’ נִקְרָא עָלֶיךָ וְיָרְאוּ מִמֶּךָּ

“And all the nations of the earth will see
that the Name of HaShem is upon you
and they will fear you”:
(Deut 28:10)
This blessing will be realized
because of the merit of putting on tefillin.

The three pronged and four pronged SHINs
on the tefillin box for the head
have many mystical implications.
including the unity of the
Three Patriachs and Four Matriachs
from which are descended the Jewish nation.