"Go back to Pharaoh," the LORD commanded Moses. "Tell him, 'This is what the LORD, the God of the Hebrews, says: Let my people go, so they can worship me.
If you continue to oppress them and refuse to let them go,
the LORD will send a deadly plague to destroy your horses, donkeys, camels, cattle, and sheep.
But the LORD will again make a distinction between the property of the Israelites and that of the Egyptians. Not a single one of Israel's livestock will die!'"
The LORD announced that he would send the plague the very next day,
and he did it, just as he had said. The next morning all the livestock of the Egyptians began to die, but the Israelites didn't lose a single animal from their flocks and herds.
Pharaoh sent officials to see whether it was true that none of the Israelites' animals were dead. But even after he found it to be true, his heart remained stubborn. He still refused to let the people go.