'Heart Was Hardened' in the Bible

Yet Pharaoh’s heart was hardened, and he did not listen to them, as the Lord had said.

But the magicians of Egypt did the same with their secret arts; and Pharaoh’s heart was hardened, and he did not listen to them, as the Lord had said.

Then the magicians said to Pharaoh, “This is the finger of God.” But Pharaoh’s heart was hardened, and he did not listen to them, as the Lord had said.

Pharaoh’s heart was hardened, and he did not let the sons of Israel go, just as the Lord had spoken through Moses.

for they had not gained any insight from the incident of the loaves, but their heart was hardened.