Exodus 4:4-6

Darby Translation

⁴ And Jehovah said to Moses, Stretch out thy hand and take it by the tail—and he stretched out his hand and caught it, and it became a staff in his hand—

⁵ that they may believe that Jehovah, the God of their fathers, the God of Abraham, the God of Isaac, and the God of Jacob, hath appeared unto thee.

⁶ And Jehovah said moreover to him, Put now thy hand into thy bosom. And he put his hand into his bosom, and took it out, and behold, his hand was leprous, as snow.