Exodus 7:13

And he hardened Pharaoh’s heart, that he hearkened not unto them; as the LORD had said.
— Exodus 7:13, King James Version

In other translations

World English Bible (WEB)

Pharaoh's heart was hardened, and he didn't listen to them; as Yahweh had spoken.

American Standard Version (ASV)

And Pharaoh’s heart was hardened, and he hearkened not unto them; as Jehovah had spoken.

Young's Literal Translation (YLT)

and the heart of Pharaoh is strong, and he hath not hearkened unto them, as Jehovah hath spoken.