Boil: Plague of Egyptians
Source: Nav
Exodus 9:9, 10
It will become fine dust over all the land of Egypt, and festering boils will break out on man and beast throughout the land.” / 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.
Deuteronomy 28:27, 35
The LORD will afflict you with the boils of Egypt, with tumors and scabs and itch from which you cannot be cured. / The LORD will afflict you with painful, incurable boils on your knees and thighs, from the soles of your feet to the top of your head.