2 Kings 5: 14 - 17
14 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.
15 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."
16 But he said, "As the LORD lives, whom I serve, I will receive none." And he urged him to take it, but he refused.
17 Then Na'aman said, "If not, I pray you, let there be given to your servant two mules' burden of earth; for henceforth your servant will not offer burnt offering or sacrifice to any god but the LORD.

EWTN