Exodus 8:32

8:32 But Pharaoh hardened ¹  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.

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¹ tn This phrase translates the Hebrew word כָּבֵד (kaved); see S. R. Driver, Exodus, 53.