Exodus 10:22-24

New Revised Standard Version, Anglicised

²² So Moses stretched out his hand towards heaven, and there was dense darkness in all the land of Egypt for three days. ²³ People could not see one another, and for three days they could not move from where they were; but all the Israelites had light where they lived. ²⁴ Then Pharaoh summoned Moses, and said, ‘Go, worship the Lord. Only your flocks and your herds shall remain behind. Even your children may go with you.’