Exodus 4:6

6Again, the Lord said to him, “Put your hand inside your cloak.”
Hebrew into your bosom; also verse 7
And he put his hand inside his cloak, and when he took it out, behold, his hand was bleprous
Leprosy was a term for several skin diseases; see Leviticus 13
like snow.

2 Kings 5:27

27Therefore the leprosy of Naaman shall cling to you and to your descendants forever.” So he went out from his presence da leper, like snow.

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