Exodus 9:10-12

World English Bible

¹⁰ They took ashes of the furnace, and stood before Pharaoh; and Moses sprinkled it up toward the sky; and it became boils and blisters breaking out on man and on animal. ¹¹ The magicians couldn’t stand before Moses because of the boils; for the boils were on the magicians and on all the Egyptians. ¹² Yahweh hardened the heart of Pharaoh, and he didn’t listen to them, as Yahweh had spoken to Moses.