Exodus 4:4-6

New Revised Standard Version Catholic Edition

⁴ Then the Lord said to Moses, “Reach out your hand, and seize it by the tail”—so he reached out his hand and grasped it, and it became a staff in his hand— ⁵ “so that they may believe that the Lord, the God of their ancestors, the God of Abraham, the God of Isaac, and the God of Jacob, has appeared to you.”

⁶ Again, the Lord said to him, “Put your hand inside your cloak.” He put his hand into his cloak; and when he took it out, his hand was leprous,^[a] as white as snow.