Exodus 4:5-7

Living Bible

⁵ “Do that and they will believe you!” the Lord told him. “Then they will realize that Jehovah, the God of their ancestors Abraham, Isaac, and Jacob, has really appeared to you. ⁶ Now reach your hand inside your robe, next to your chest.” And when he did, and took it out again, it was white with leprosy! ⁷ “Now put it in again,” Jehovah said. And when he did, and took it out again, it was normal, just as before!