2 Kings 5:14-15

14So Naaman went down and dipped himself in the Jordan seven times, according to the command of the man of God. Then his skin was restored and became like the skin of a small boy, and he was clean.

15Then Naaman and his whole company went back to the man of God, stood before him, and declared, “I know there’s no God in the whole world except in Israel. Therefore, please accept a gift from your servant.”