Afterward Moshe and Aharon came, and said to Par`oh, *This is what the LORD, the God of Yisra'el, says, 'Let my people go, that they may hold a feast to me in the wilderness.'*
The LORD said to Moshe, *Rise up early in the morning, and stand before Par`oh, and tell him, 'This is what the LORD, the God of the Hebrews, says: *Let my people go, that they may serve me.
behold, the hand of the LORD is on your livestock which are in the field, on the horses, on the donkeys, on the camels, on the herds, and on the flocks with a very grievous pestilence.
People were scorched with great heat, and people blasphemed the name of God who has the power over these plagues. They didn't repent and give him glory.