Exodus 25:22 contains one of the most intimate promises in the Torah. The Holy One tells Moses that He will meet with him there, above the kapporet, the mercy-seat, between the two keruvim that stand over the ark of the testimony. Every commandment for the children of Israel will issue from that single point in space.
The Targum Pseudo-Jonathan introduces a careful theological adjustment. God does not simply say, I will speak with thee. The Targum reads: I will appoint My Word with thee there, and will speak with thee from above the mercy-seat. The Aramaic term is Memra, the Word. It is the Targum's way of guarding divine transcendence while preserving divine intimacy. The Infinite One does not literally crouch between two golden wings. His Memra, His speaking Presence, takes up that station.
From that narrow gap, prophecy will flow. The Talmud in Yoma 54a records that when the High Priest entered the Holy of Holies on Yom Kippur, the keruvim would be found embracing, their faces turned toward each other, when Israel was doing God's will. When Israel strayed, the keruvim turned away. The mercy-seat was a living instrument.
Moses did not have to ascend Sinai again every time he needed guidance. The cloud that had covered the mountain now rested on a box the size of a coffin, inside a tent pitched in sand. Revelation had traveled with the people. The takeaway the old rabbis drew: Shekhinah does not need altitude. Build the mercy-seat correctly, and the Word will descend to the height of your outstretched hand.