The sixth plague – festering boils (Ex 9:8-9:12)

“Then Yahweh said to Moses and Aaron, ‘Take handfuls of soot from the kiln, and let Moses throw it in to the air in the sight of Pharaoh.  It shall become fine dust all over the land of Egypt, and shall cause festering boils on humans and animals throughout the whole land of Egypt.’  So they took soot from the kiln, and stood before Pharaoh.  Moses threw it in the air and it caused festering boils on humans and animals.  The magicians could not stand before Moses because of the boils, for the boils afflicted the magicians, as well as all the Egyptians.  But Yahweh hardened the heart of Pharaoh, and he would not listen to them, just as Yahweh had spoken to Moses.”

Moses took soot from the kiln, and stood before Pharaoh, and threw it in the air.  This caused festering boils on humans and animals.  However, it is not clear how this happened, since he was only in one room.  This time it afflicted the magicians, as well as the rest of the Egyptians.  You guessed it, Yahweh hardened the heart of Pharaoh, and he would not listen to them.