Cross reference
Exodus 9:12
12 And the LORD hardened the heart of Pharaoh, and he hearkened not unto them; as the LORD had spoken unto Moses.
Exodus 4:21
21 And the LORD said unto Moses, When thou goest to return into Egypt, see that thou do all those wonders before Pharaoh, which I have put in thine hand: but I will harden his heart, that he shall not let the people go.
Exodus 7:13-14
13 And he hardened Pharaoh's heart, that he hearkened not unto them; as the LORD had said.
14 And the LORD said unto Moses, Pharaoh's heart is hardened, he refuseth to let the people go.
Psalms 81:11-12
11 But my people would not hearken to my voice; and Israel would none of me.
12 So I gave them up unto their own hearts' lust: and they walked in their own counsels.
Revelation 16:10-11
10 And the fifth angel poured out his vial upon the seat of the beast; and his kingdom was full of darkness; and they gnawed their tongues for pain,
11 And blasphemed the God of heaven because of their pains and their sores, and repented not of their deeds.