When Moses and Aaron walked into Pharaoh's palace to demand the release of the Israelite slaves, they were not entering a building. They were entering a fortress designed to intimidate.
The midrash (rabbinic interpretive commentary)ic tradition, preserved in the Midrash Hagadol on Exodus and the Targum, fills in details that the biblical text leaves spare. Pharaoh's palace was surrounded by guards, wild animals, and magical protections. No one entered without the king's permission. Foreign ambassadors waited weeks for an audience. And here came two elderly Hebrews — one a stutterer, the other a priest of a slave people — walking past every barrier as though they did not exist.
The guards tried to stop them. According to the Tanchuma, the palace's protective spells should have struck down any uninvited visitor. But Moses carried the staff of God, and Aaron carried the authority of the priesthood, and together they walked through Pharaoh's defenses the way a flame walks through dry grass.
When they finally stood before Pharaoh, the king did not even recognize who they were. "Who are you?" he demanded. He had thousands of slaves and could not be expected to know the leaders of every subject people. Moses and Aaron had to introduce themselves — and their God.
"Thus says the Lord, the God of Israel: Let My people go" (Exodus 5:1). Pharaoh's response was famously dismissive: "Who is the Lord, that I should obey His voice?" He would learn the answer to that question over the course of ten devastating plagues.
But the rabbis preserved this moment — the two brothers standing alone before the most powerful ruler on earth — as proof that courage backed by divine mission can walk through any wall.