Exodus 10:19-21

King James Version

¹⁹ And the Lord turned a mighty strong west wind, which took away the locusts, and cast them into the Red sea; there remained not one locust in all the coasts of Egypt.

²⁰ But the Lord hardened Pharaoh's heart, so that he would not let the children of Israel go.

²¹ And the Lord said unto Moses, Stretch out thine hand toward heaven, that there may be darkness over the land of Egypt, even darkness which may be felt.