The: מַּחְתָה shovel was also full (of burning coals), and Chazal say that the Kodesh HaKodoshim became “full” with smoke (of the Ketores). And Ketores is: מַּעֲשֶׁ רֶת a major Segula to become rich! (Chazal). Ketores symbolizes having everything, and: א יזֶהוּ עָשִׁ יר הַשָמ חַ בְחֶלְקוֹ Who is truly “rich”? One who is Sameach B'chelko, i.e., content with what he has. Who is the only person who may enter the Kodesh HaKodoshim on Yom Kippur? Only the Cohen Gadol (Ahron). How did Ahron become Cohen Gadol? ל ב שֶׁשָמַח בִגְדוּלַת אָחִיו Because his “heart” rejoiced with his brother’s greatness, so he received the Choshen on his “heart”, which had 12 אַבְנ י מִלוּאִים Avnei Milu'im (stones that filled their boxes). Each Shevet filled his golden box with his unique precious stone; so too should every person feel fulfilled with his unique Avodas Hashem without having any Kin'ah of others. How does a person become happy (Ahron) when his younger brother (Moshe) gets a higher position then himself? When he is himself a fulfilled happy person!
Chazal say that Ketores also symbolizes Simcha (Zohar) and Bitachon (Medrash). The Gr"a explains that when the Gemara says that the Churban Bais Hamikdash happened because of Sin'as Chinam, the Gemara really means that they did not have Bitachon, which is the root cause of Sin'as Chinam! And Bitachon means being a Sameach B'chelko. (Gr"a). The Kiyum (support) of the Bais Hamikdash is having an Ahron type of Cohen Gadol, whom everyone should emulate. The first Avoda of Kodesh HaKodoshim on Yom Kippur is filling the Kodesh HaKodoshim with Ketores.
