Exodus 9:12-14 Easy-to-Read Version (ERV)
12 But the Lord made Pharaoh stubborn, so he refused to listen to Moses and Aaron, just as the Lord had said.
13 Then the Lord said to Moses, “Get up in the morning and go to Pharaoh. Tell him that the Lord, the God of the Hebrews, says, ‘Let my people go to worship me! 14 This time, I will use my full power against you, your officials, and your people. Then you will know that there is no god in the world like me.