And you Moses, bring you forward Aaron your brother and his sons with him from the midst of the Israelites to be priests to Me…A midrash suggests that there were unanswered questions about Aaron’s role in making the golden calf. Moses thought his brother deserved some blame, and Aaron was disappointed in himself. In requiring Moses to transform Aaron into a priest, God was sending Moses a message about Aaron’s innocence, and assuring Aaron. In this reading, it was the challenge of the golden calf that led Aaron to becoming the High Priest. Sometimes our greatest trials are preparing the way for roles we can’t fathom.