2 Kings 5:14-17

14So, he went down and dipped himself seven times in the Jordan, according to the word of the man of God. Then his flesh was restored like the flesh of a little child, and he was clean.

15When he returned with his entire retinue to the man of God, and came and stood before him, he said, “Behold, now I know that there is no God in all the earth except in Israel. Now please, accept a present from your servant.”

16But Elisha said, “As Adonai before whom I stand lives, I will accept nothing.” Naaman pressed him to accept, but Elisha refused.

17So Naaman said, “If not, then please, let your servant be given two mule loads of soil, for your servant will no longer offer burnt offering or sacrifice to any other god, except Adonai.