It wasn't just about aesthetics or availability. According to Shemot Rabbah, it was a symbolic statement about history, power, and ultimately, redemption.
We read in Exodus 25:3, "This is the gift that you shall collect from them: Gold and silver and bronze." But the rabbis in Shemot Rabbah 35 see more than just precious metals. They see empires. Gold, they say, represents Babylon, echoing Daniel 2:32, "That image, its head was of fine gold." Daniel, of course, was interpreting Nebuchadnezzar's dream, where different metals symbolized different kingdoms. Silver? That's Media. Bronze? Greece. But notice something missing: iron.
Why no iron in the Temple or Tabernacle? This is where it gets interesting. Iron, we're told, symbolizes Edom, the nation responsible for destroying the Second Temple. Daniel 2:40 says, "The fourth kingdom will be strong as iron." The Sages are making a direct connection between the destructive force of iron and the legacy of Edom/Rome.
You might be thinking, "Wait a minute! Babylon destroyed the First Temple!" True. But the text emphasizes that Edom, unlike Babylon, didn't just destroy, it sought complete annihilation. As Psalm 137:7 says, "Who said: Raze it, raze it, to its very foundation!" Even today, remnants of that foundation remain. Thus, iron, and all it represents, is conspicuously absent from the sacred spaces.
But the story doesn't end there. The Midrash envisions a future where all nations bring tribute to the messianic king. Egypt comes first. Initially, the king hesitates. Should he accept gifts from a nation that enslaved Israel for so long? But God reminds him, "They were hosts to My children in Egypt," quoting Psalm 68:32, "Noblemen will arrive from Egypt; Kush will hasten to extend its hands to God." He accepts their offering.
Kush, seeing this, reasons, "If he accepted from Egypt, who enslaved them, surely he'll accept from us, who didn't!" And so, "Kush will hasten to extend its hands to God." Soon, all the nations follow suit, as Psalm 68:33 foretells, "Kingdoms of the earth, sing to God!"
Now, what about Edom? They too, try to bring tribute. But God says, "Castigate the beast of the reed," (Psalm 68:31). Here, Edom/Rome is likened to a reed, a connection drawn from the Gemara (Shabbat 56b) which says that when Solomon married Pharaoh's daughter, an angel planted a reed in the sea, which eventually became Rome.
Another interpretation sees Edom as "the boar from the forest" (Psalm 80:14), or "the herd of cavalry horses" (Psalm 68:31), consuming the wealth of nations while claiming lineage from Abraham. They "grovel for pieces of silver" (Psalm 68:31), easily appeased by money, but also scattering Israel from Torah study and from the world.
So, what's the takeaway? This passage from Shemot Rabbah isn't just a history lesson. It's a profound meditation on destruction, redemption, and the enduring impact of our actions. It reminds us that even empires rise and fall, and that ultimately, justice and compassion will prevail. And it challenges us to consider: What "metals" are we building with today? What kind of legacy are we creating?