Exodus 9:35
So Pharaoh’s heart hardened, and he did not let the Israelites go, as the Lord had said through Moses.
Exodus 4:21
The Lord instructed Moses, “When you go back to Egypt, make sure you do all the wonders before Pharaoh that I have put within your power. But I will harden his heart
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
Afterward, however, they changed their minds and took back their male and female slaves they had freed and forced them to become slaves again.