ויאמר משה אל אהרן קרב אל המזבח ועשה את חטאתך ואת עלתך וכפר בעדך ובעד העם
Aharon HaKohen was reluctant to approach the Mizbayach, because he was ashamed of his role in the creation of the eigal ha’zahav, Golden Calf. Moshe Rabbeinu attempted to assuage his perceived guilt and apparent shame, saying, “Why are you embarrassed? It is for this reason that Hashem chose you to be the Kohen Gadol, High Priest.” Simply, this means that Hashem chose Aharon to fill the position; therefore, he must execute the service. It is not an optional, arbitrary position. It is mandatory. Alternatively, the Degel Machane Efraim explains that it was specifically Aharon’s sense of shame and inadequacy that…