Exodus 10:22-24

Revised Standard Version

²² So Moses stretched out his hand toward heaven, and there was thick darkness in all the land of Egypt three days; ²³ they did not see one another, nor did any rise from his place for three days; but all the people of Israel had light where they dwelt. ²⁴ Then Pharaoh called Moses, and said, “Go, serve the Lord; your children also may go with you; only let your flocks and your herds remain behind.”