For if you refuse to let them go and still hold them,
behold, the hand of the LORD will fall with a very severe plague upon your cattle which are in the field, the horses, the asses, the camels, the herds, and the flocks.
But the LORD will make a distinction between the cattle of Israel and the cattle of Egypt, so that nothing shall die of all that belongs to the people of Israel."'"
And the LORD set a time, saying, "Tomorrow the LORD will do this thing in the land."
And on the morrow the LORD did this thing; all the cattle of the Egyptians died, but of the cattle of the people of Israel not one died.
And Pharaoh sent, and behold, not one of the cattle of the Israelites was dead. But the heart of Pharaoh was hardened, and he did not let the people go.
And the LORD said to Moses and Aaron, "Take handfuls of ashes from the kiln, and let Moses throw them toward heaven in the sight of Pharaoh.
And it shall become fine dust over all the land of Egypt, and become boils breaking out in sores on man and beast throughout all the land of Egypt."
So they took ashes from the kiln, and stood before Pharaoh, and Moses threw them toward heaven, and it became boils breaking out in sores on man and beast.
And the magicians could not stand before Moses because of the boils, for the boils were upon the magicians and upon all the Egyptians.
But the LORD hardened the heart of Pharaoh, and he did not listen to them; as the LORD had spoken to Moses.
Revised Standard Version of the Bible, copyright 1952 [2nd edition, 1971] by the Division of Christian Education of the National Council of the Churches of Christ in the United States of America. Used by permission. All rights reserved. (Revised Standard Version - Holy Bible)