Exodus 8:29-31

New Century Version

²⁹ Moses said, “I will leave and pray to the Lord, and he will take the flies away from you, your officers, and your people tomorrow. But do not try to trick us again. Do not stop the people from going to offer sacrifices to the Lord.”

³⁰ So Moses left the king and prayed to the Lord, ³¹ and the Lord did as he asked. He removed the flies from the king, his officers, and his people so that not one fly was left.