Exodus 7:13, 16, 22

And Pharaoh’s heart grew hard, and he did not heed them, as the LORD had said.

And you shall say to him, ‘The LORD God of the Hebrews has sent me to you, saying, “Let My people go, that they may serve Me in the wilderness”; but indeed, until now you would not hear!

Then the magicians of Egypt did so with their enchantments; and Pharaoh’s heart grew hard, and he did not heed them, as the LORD had said.