The inner altar and the candlestick
Rabbi Shimon says that the candlestick above, Malchut, and all its lamps, the Sfirot, all shine through Aaron, since he readied the candlestick. He compares the twelve princes of the twelve tribes to the twelve permutations of Yud Hei Vav Hei in Zeir Anpin. The candlestick was assigned with the seven lamps corresponding to the seven Sfirot. It stands through a sign and was produced through a miracle. We learn about the inner altar and the outer altar, and how abundance flows from the inner to the outer. Incense is the connection of everything.