Exodus 9:35
So the heart of Pharaoh was hardened, and he did not let the people of Israel go, just as the LORD had spoken through Moses.
Exodus 4:21
And the LORD said to Moses, "When you go back to Egypt, see that you do before Pharaoh all the miracles that I have put in your power. But I will harden his heart, so that he will 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 around and took back the male and female slaves they had set free, and brought them into subjection as slaves.