Pharaoh's Hardness of Heart

During the plague cycles there are 3 different ways Pharaoh's hardness of heart is expressed:

1. Pharaoh hardened his own heart (Exo 8:15,32; 9:34).
• "But when Pharaoh saw that there was relief, he hardened his heart and would not listen to Moses and Aaron, just as the Lord had said" (Exo 8:15).
  
• "But this time also Pharaoh hardened his heart and would not let the people go" (Exo 8:32).
• "When Pharaoh saw that the rain and hail and thunder had stopped, he sinned again: He and his officials hardened their hearts" (Exo 9:34).
  
2. Pharaoh's heart was hardened or became hard (Exo 7:13-14,22-23; 8:19; 9:7,35).
• "Yet Pharaoh's heart became hard and he would not listen to them, just as the Lord had said. Then the Lord said to Moses, 'Pharaoh's heart is unyielding; he refuses to let the people go'" (Exo 7:13-14).
• "But the Egyptian magicians did the same things by their secret arts, and Pharaoh's heart became hard; he would not listen to Moses and Aaron, just as the Lord had said. Instead, he turned and went into his palace, and did not take even this to heart" (Exo 7:22-23).
• "...the magicians said to Pharaoh, 'This is the finger of God.' But Pharaoh's heart was hard and he would not listen, just as the Lord had said" (Exo 8:19).
• "Pharaoh investigated and found that not even one of the animals of the Israelites had died. Yet his heart was unyielding and he would not let the people go" (Exo 9:7).
• "So Pharaoh's heart was hard and he would not let the Israelites go, just as the Lord had said through Moses" (Exo 9:35).
3. God hardened his heart (Exo 9:12; 11:10; 14:8).
• "But the Lord hardened Pharaoh's heart and he would not listen to Moses and Aaron, just as the Lord had said to Moses" (Exo 9:12).
  
• "Moses and Aaron performed all these wonders before Pharaoh, but the Lord hardened Pharaoh's heart, and he would not let the Israelites go out of his country" (Exo 11:10).
  
• "The Lord hardened the heart of Pharaoh king of Egypt, so that he pursued the Israelites, who were marching out boldly" (Exo 14:8).