Long before it carried spiritual weight, the name Zion belonged to a Jebusite fortress carved into a hilltop in ancient Canaan. They called it Tsiyon — from a root meaning castle, protection, raised monument. The name predates monotheism entirely.
When King David conquered that citadel, the name endured. Centuries of prophets and mystics then performed the ultimate alchemical act — they took a name that meant physical stronghold and transmuted it into the universal symbol for a spiritual sanctuary, a higher state of being, a world remade in light.
That transmutation — from stone fortress to spiritual architecture — is the entire philosophy. The Great Work begins where the physical and the divine intersect.