Exodus 8:28-30

New Revised Standard Version Catholic Edition

²⁸ So Pharaoh said, “I will let you go to sacrifice to the Lord your God in the wilderness, provided you do not go very far away. Pray for me.” ²⁹ Then Moses said, “As soon as I leave you, I will pray to the Lord that the swarms of flies may depart tomorrow from Pharaoh, from his officials, and from his people; only do not let Pharaoh again deal falsely by not letting the people go to sacrifice to the Lord.”

³⁰ So Moses went out from Pharaoh and prayed to the Lord.