Exodus 10:23 BBE

²¹  And the Lord said to Moses, Let your hand be stretched out to heaven, and all the land of Egypt will be dark, so that men will be feeling their way about in the dark.

²²  And when Moses' hand was stretched out, dark night came over all the land of Egypt for three days;

²³  They were not able to see one another, and no one got up from his place for three days: but where the children of Israel were living it was light.

²⁴  Then Pharaoh sent for Moses, and said, Go and give worship to the Lord; only let your flocks and your herds be kept here: your little ones may go with you.

²⁵  But Moses said, You will have to let us take burned offerings to put before the Lord our God.