Machshavot HaLev - Yeshivat Lev HaTorah

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בלה תובשחמ
This may even explain the halacha quoted by Rashi as well: it does not make
sense to violate the terms of kedushat ha-zman, Hashem’s concentrated Presence
in the realm of time, in order to lay the groundwork for kedushat ha-makom. On
the other hand, once the mishkan was completed and Hashem’s Presence actually
rested there, avoda in the mishkan did justify and even require doing melacha on
Shabbat; at that point, involvement in the mishkan meant that one was engaging
the Presence of God in space, and not just ignoring it in the realm of time.
May we fully appreciate the kedusha of Shabbat and the possibility of creating
holiness in time and space, and may we successfully extend the kedusha of Shabbat
to the entire week and the kedusha of mikdash to our homes and the entire world.