2 Kings 5:14-15

14So 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.

15Then 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."