Do as the man of God says, and you will be clean

Made clean by the word of God

Then he went down seven times into the waters of Jordan, as the man of God had said; and his flesh became like the flesh of a little child again, and he was clean.
2 Kings 5:14

2Ki 5:13 Then his servants came to him and said, If the prophet had given you orders to do some great thing, would you not have done it? how much more then, when he says to you, Be washed and become clean?
2Ki 5:14 Then he went down seven times into the waters of Jordan, as the man of God had said; and his flesh became like the flesh of a little child again, and he was clean.
2Ki 5:15 Then he went back to the man of God, with all his train, and, taking his place before him, said, Now I am certain that there is no God in all the earth, but only in Israel: now then, take an offering from me.