Exodus 4:4-6

Living Bible

⁴ Then the Lord told him, “Grab it by the tail!” He did, and it became a rod in his hand again!

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!