Exodus 4:6-8

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.
7Then God said, “Put your hand back inside your cloak.” So he put his hand back inside his cloak, and when he took it out, behold, dit was restored like the rest of his flesh. 8“If they will not believe you,” God said, “or listen to the first sign, they may believe the latter sign.
Copyright information for ESV