He was a Samaritan - One who professed a very corrupt religion; and from whom much less was to be expected than from the other nine, who probably were Jews.

And he fell down on his face at his feet,.... For being cleansed, he might draw nigh unto Jesus; and which he did, with the most profound respect unto him, and reverence of him; and having a deep sense of the favour he had received from him, prostrated himself in this manner before him:
giving him thanks; who had shown compassion to him, had exerted his power on him, and had favoured him with such a singular mercy, as restoring him to health:
and he was a Samaritan; this is particularly remarked by the evangelist, because the Samaritans were reckoned by the Jews, to be ignorant and irreligious persons, and no better than Heathens; and yet this man behaved as a religious good man, who had a sense of his mercy, knew his duty, and his obligations, and performed them; when the other nine, who very likely were all Jews, acted a very stupid and ungrateful part.