When Aaron and Moses approached Pharaoh with God’s demand that he let the Israelites leave Egypt (Exodus 5:1-2), Pharaoh’s question was “Who is the Lord, that I should obey Him.” This sermon answers the question. God is the Almighty, the Giver of Blessings, The One who requires obedience, the Just and Merciful, and the One to whom we must give account.