Afterward Moses and Aaron went to Pharaoh and said, “Thus says the Lord, the God of Israel, ‘Release my people so that they may hold a pilgrim feast to me in the desert.’”
The Lord said to Moses, “Get up early in the morning, stand before Pharaoh, and tell him, ‘Thus says the Lord, the God of the Hebrews: “Release my people so that they may serve me!
then the hand of the Lord will surely bring a very terrible plague on your livestock in the field, on the horses, the donkeys, the camels, the herds, and the flocks.
Thus people were scorched by the terrible heat, yet they blasphemed the name of God, who has ruling authority over these plagues, and they would not repent and give him glory.