“Then a new king, to whom Joseph meant nothing, came to power in Egypt.” Exodus 1:8
The story of Moses begins where the story of Joseph ends: in Egypt. There are some interesting parallels between the two:
Both were unlikely candidates to be God’s messenger. Joseph was a slave and a condemned prisoner. Moses was banished royalty.

James Tissot, The Rod of Aaron Devours the Other Rods
Both messengers were heard by the Pharoah…but received in very different ways: Pharaoh believes Joseph’s message of impending disaster, knowing from his dreams that all was not well in the land of Egypt. Pharaoh rejects Moses’ warning, being confident in Egypt’s unrivaled power, wealth and divine favor.
God directly influences both Pharaohs’ receptivity to the message…in different ways. God warns Pharaoh through dreams that disaster is coming, preparing him to hear Joseph’s message. God harden’s Pharoah’s heart, so that he is unable to see the impending disaster, even when the signs are everywhere.
Both messengers eventually receive positions of power and responsibility. Joseph becomes second in command in the Egyptian empire, and is tasked with protecting an entire civilization from destruction. Moses takes on the roles of prophet, priest and king over God’s people, and is tasked with protecting them from self-destruction.
Both messages affect the geographical relocation of God’s people. As a result of Joseph’s message, God’s people are relocated to Goshen and offered security. As a result of Moses’ message, God’s people are liberated (or expelled) from Egypt. God leads them to the land promised to Abraham, after a generation of wandering into the wilderness.
So, what happens when God’s messengers challenge authority? It depends on the crisis, the messenger and the authority.
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