Exodus 9:13-16

Then the LORD said to Moses, ‘Get up early in the morning, confront Pharaoh and say to him, “This is what the LORD, the God of the Hebrews, says: let my people go, so that they may worship me, or this time I will send the full force of my plagues against you and against your officials and your people, so you may know that there is no-one like me in all the earth. For by now I could have stretched out my hand and struck you and your people with a plague that would have wiped you off the earth. But I have raised you up for this very purpose, that I might show you my power and that my name might be proclaimed in all the earth.