2 Kings 5:13-15

But his servants came near and said to him, “My father, it is a great word the prophet has spoken to you; will you not do it? Has he actually said to you, ‘Wash, and be clean’?” So he went down and dipped himself seven times in the Jordan, according to the word of the man of God, and his flesh was restored like the flesh of a little child, and he was clean. Then he returned to the man of God, he and all his company, and he came and stood before him. And he said, “Behold, I know that there is no God in all the earth but in Israel; so accept now a present from your servant.”