22-23. “The Lord's people in Goshen won't be bothered by flies, but your people in the rest of the country will be tormented by them. That's how you will know that the Lord is here in Egypt. This miracle will happen tomorrow.”
24. The Lord kept his promise—the palace and the homes of the royal officials swarmed with flies, and the rest of the country was infested with them as well.
25. Then the king sent for Moses and Aaron and told them, “Go and sacrifice to your God, but stay here in Egypt.”
26. “That's impossible!” Moses replied. “Any sacrifices we offer to the Lord our God would disgust the Egyptians, and they would stone us to death.
27. No indeed! The Lord has ordered us to walk three days into the desert before offering sacrifices to him, and that's what we have to do.”
28. Then the king told him, “I'll let you go into the desert to offer sacrifices, if you don't go very far. But in the meantime, pray for me.”