There’s a true tzadik who’s the beauty, splendor, and grace of the entire world. And when this tzadik is made famous and revealed in the world, all those who are attached and encompassed within this tzadik have their eyes opened: they are able to see within themselves/whey they are holding in their traits, and they are also able to see the greatness of HASHEM!
Rabeinu also teaches us that there are luminaries of light (representing holiness) and luminaries of fire (representing evil). When the luminaries of light are given strength, the luminaries of fire are subdued, and G-d forbid the opposite occurs when the luminaries of fire are given power. It is these luminaries of fire that cause the destruction of the temple…
Rabeinu, in connection with all this mentioned above, greatly emphasizes the importance of getting up chatzot/midnight to mourn over the destruction of the temple. And anyone who does so, will truly see G-d “replace for the mourners of Tzion splendor instead of ashes…”
Rabeinu connects these ideas with why the Divine Presence cries out at the Western Wall and mourns over the fact that her children are in Exile.
Rabeinu also explains this in connection with the tefillin, which is also called splendor, with the 4 mentalities granted to Betzalel, revealing G-d’s Name, false leaders, the eulogy when a true tzadik passes away, lamenting over the spilling of Jewish blood, the Ba’al Habayit, the Etrog, the beautiful maiden without eyes (Zohar Mishpatim)…