2 Kings 5:14-17

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. When he returned to the man of God with all his company, and came and stood before him, he said, “Behold now, I know that there is no God in all the earth, but in Israel; so please take a present from your servant now.” But he said, “As the LORD lives, before whom I stand, I will take nothing.” And he urged him to take it, but he refused. Naaman said, “If not, please let your servant at least be given two mules’ load of earth; for your servant will no longer offer burnt offering nor will he sacrifice to other gods, but to the LORD.