Exodus 8:32
32 But Pharaoh hardened his heart this time also, and mdid not let the people go.
Exodus 7:14
The First Plague: Water Turned to Blood
14 Then the Lord said to Moses, “Pharaoh’s heart is hardened; hhe refuses to let the people go.
Exodus 9:7
7 And Pharaoh sent, and behold, not one of the livestock of Israel was dead. But qthe heart of Pharaoh was hardened, and rhe did not let the people go.
Exodus 9:34
34 But when Pharaoh saw that the rain and the hail and the thunder had ceased, he sinned yet again and hhardened his heart, he and his servants.
Exodus 10:1
The Eighth Plague: Locusts
1 Then the Lord said to Moses, “Go in to Pharaoh, for jI have hardened his heart and the heart of his servants, that I may show these ksigns of mine among them,