רבינו בחיי — כי בענן אראה על הכפרת

Q — What does "כי בענן אראה על הכפרת" add — Klal Yisrael had been seeing the Kavod in the ענן since yetzias mitzraim?

A — Rabbeinu Bachya parses the syntax with surgical care. The pasuk did not say "בענן אראה" ("I will appear *in* the cloud") — that would be the everyone-level revelation. It said "בענן אראה על הכפרת" — "in the cloud, I will appear *on* the Kapores". The grammar splits two clauses: the cloud is the bichlal mode (the public, ambient Presence); but on Yom Kippur something more happens — the Kavod *detaches* from the cloud and becomes visible *on the Kapores itself*, an unmediated זיו that no one but the Kohen Gadol sees. And precisely because that unmediated Kavod would consume him, the ketores cloud is mandated as כסות עינים — a screen drawn between his eyes and a brightness he cannot endure. The Kohen Gadol's avodah on Yom Kippur is therefore choreographed: enter into the highest-grade Presence, while protecting the human eye that would otherwise burn out from seeing it.