Exodus 6:11

6:11 “Go, tell Pharaoh king of Egypt that he must release the Israelites from his land.”

Exodus 7:14

The First Blow: Water to Blood

7:14 The Lord said to Moses, “Pharaoh’s heart is hard; he refuses to release the people.

Exodus 8:32

8:32 But Pharaoh hardened his heart this time also and did not release the people.

Exodus 10:20

10:20 But the Lord hardened Pharaoh’s heart, and he did not release the Israelites.

Exodus 10:27

10:27 But the Lord hardened Pharaoh’s heart, and he was not willing to release them.