2 Kings 5:10, 14

But Elisha sent a messenger out to him with this message: “Go and wash yourself seven times in the Jordan River. Then your skin will be restored, and you will be healed of your leprosy.”

So Naaman went down to the Jordan River and dipped himself seven times, as the man of God had instructed him. And his skin became as healthy as the skin of a young child, and he was healed!