Exodus 5:1, 3

After this presentation to Israel’s leaders, Moses and Aaron went and spoke to Pharaoh. They told him, “This is what the LORD, the God of Israel, says: Let my people go so they may hold a festival in my honor in the wilderness.”

But Aaron and Moses persisted. “The God of the Hebrews has met with us,” they declared. “So let us take a three-day journey into the wilderness so we can offer sacrifices to the LORD our God. If we don’t, he will kill us with a plague or with the sword.”