Complex sentence: Iconographic and hieroglyphic references to fire could suggest their involvement in disease-casting ('fire' can also mean'fever'); the'jar of darkness' with its escaping snakes and insects points in the same direction.
Split into simpler sentences: Iconographic and hieroglyphic references to fire could suggest their involvement in disease-casting ('fire' can also mean'fever'). The'jar of darkness', with its escaping snakes and insects, points in the same direction.