Exodus 8:15 in the World English Bible
But when Pharaoh saw that there was a respite, he hardened his heart, and didn’t listen to them, as the LORD had spoken.
Context
14 And they gathered them together upon heaps: and the land stank.
15 But when Pharaoh saw that there was respite, he hardened his heart, and hearkened not unto them; as the LORD had said.
16 And the LORD said unto Moses, Say unto Aaron, Stretch out thy rod, and smite the dust of the land, that it may become lice throughout all the land of Egypt.