King James Version (KJV) - Exodus 8:15 >

But when Pharaoh saw that there was respite, he hardened his heart, and hearkened not unto them; as the LORD had said.

Jewish Publication Society of America Version (JPS1917) - Exodus 8:15 >

(8-11) But when Pharaoh saw that there was respite, he hardened his heart, and hearkened not unto them; as the LORD had spoken.