Miracles Wrought Through Servants of God: Moses and Aaron: Boils and Blains Brought
Source: TTT
Exodus 9:10, 11
So they took soot from the furnace and stood before Pharaoh. Moses tossed it into the air, and festering boils broke out on man and beast. / The magicians could not stand before Moses, because the boils had broken out on them and on all the Egyptians.