his hand was leprous like snow” (Ex. 4:6). Then Moses placed his hand inside his robes a second time, and when he had “removed it from his chest, his skin had [already] returned to normal ...

For instance, in the book of Leviticus 13:1-46, the Lord said to Moses and Aaron, “When a man has on the skin of his body a swelling or an eruption or a spot, and it turns into a leprous disease ...