2 Kings 5:13-14

his servants approached him, and they said to him: "If the prophet had told you, father, to do something great, certainly you ought to have done it. How much more so, now that he has said to you: 'Wash, and you will be clean?' " So he descended and washed in the Jordan seven times, in accord with the word of the man of God. And his flesh was restored, like the flesh of a little child. And he was made clean.