Exodus 4:6-7

4:6 The Lord also said to him, “Put your hand into your robe.” So he put his hand into his robe, and when he brought it out – there was his hand, leprous like snow! 4:7 He said, “Put your hand back into your robe.” So he put his hand back into his robe, and when he brought it out from his robe – there it was, restored like the rest of his skin!