II Kings 5:14-17

So he went down and dipped 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. And he returned to the man of God, he and all his aides, and came and stood before him; and he said, “Indeed, now I know that there is no God in all the earth, except in Israel; now therefore, please take a gift from your servant.” But he said, “As the LORD lives, before whom I stand, I will receive nothing.” And he urged him to take it, but he refused. So Naaman said, “Then, if not, please let your servant be given two mule-loads of earth; for your servant will no longer offer either burnt offering or sacrifice to other gods, but to the LORD.