2 Kings 5:13-14

His servants came near and spoke to him, and said, “My father, if the prophet had asked you do some great thing, wouldn’t you have done it? How much rather then, when he says to you, ‘Wash, and be clean’?” Then went he down and dipped himself seven times in the Jordan, according to the saying of the man of God; and his flesh was restored like the flesh of a little child, and he was clean.