Talmud Beitzah 16a, Rabbi Chaim Wolosow
https://www.torahrecordings.com/mamorimmelukotim/004/011B גדול יהיה כבוד הבית הזה האחרון מן הראשון Mamer - "Gadol Yihiyeh Kavod HaBayis HaZeh HaAcharon Min HaRishon" The Rebbe teaches that the Third Beis HaMikdash will reveal a unity of G-dliness surpassing the first two Temples, making even the physical world a vessel for the infinite. This eternal revelation will begin with the Beis HaMikdash and extend to all creation, culminating in the resurrection and ultimate redemption.