Exodus 9:35
And the heart of Pharaoh was hardened, neither would he let the sons of Israel go, even as Jehovah had spoken by Moses.
Exodus 4:21
And Jehovah said to Moses, When you go to return into Egypt, see that you do all those wonders which I have put in your hand before Pharaoh; but I will harden his heart, that he shall not let the people go.
Treasury of Scripture Knowledge
Summary
And the heart of Pharaoh was hardened, neither would he let the children of Israel go; as the LORD had spoken by Moses.
General references
Bible References
General references
Jeremiah 34:11
But afterward they turned and caused the slaves and slave women whom they had let go free, to return! And they subjected them for slaves and slave women.