Exodus 9:12-14

Darby Translation

¹² And Jehovah made Pharaoh's heart stubborn, and he did not hearken to them, as Jehovah had told Moses.

¹³ And Jehovah said to Moses, Rise up early in the morning, and set thyself before Pharaoh, and say to him, Thus saith Jehovah, the God of the Hebrews: Let my people go, that they may serve me.

¹⁴ For I will at this time send all my plagues to thy heart, and on thy bondmen, and on thy people; that thou mayest know that there is none like me in all the earth.