Exodus 10:20-22

Douay-Rheims 1899 American Edition

²⁰ And the Lord hardened Pharao's heart, neither did he let the children of Israel go.

²¹ And the Lord said to Moses: Stretch out they hand towards heaven: and may there be darkness upon the land of Egypt, so thick that it may be felt.

²² And Moses stretch forth his hand towards heaven: and there came horrible darkness in all the land of Egypt for three days.