Mark 1:43

And he immediately threatened him and cast him out, etc. Why is it commanded to tell no one, except to indicate that our benefits are not to be publicized, but kept hidden, so that we refrain not only from the reward of money but also from praise.

(Hom. 25) As if He said, It is not yet time that My works should be preached, I require not thy preaching. By which He teaches us not to seek worldly honour as a reward for our works. It goes on: But go thy way, show thyself to the chief of the priests. Our Saviour sent him to the priest for the trial of his cure, and that he might not be cast out of the temple, but still be numbered with the people in prayer. He sends him also, that he might fulfil all the parts of the Law, in order to stop the evil-speaking tongue of the Jews. He Himself indeed completed the work, leaving them to try it.

" 'If you are willing, you can cleanse me.' So he stretched out his hand." In this stretching out of his hand he seemed to be abrogating the law. For [it is written] in the law that whoever approaches a leper becomes impure.… He showed that nature was good in that he repaired its defect. Because he sent him to the priests, he thereby upheld the priesthood. He also ordered him to make an offering for his cleansing. did he not thus uphold the law, as Moses had commanded? There were many prescriptions concerning leprosy. But they were unable to procure any benefit. Then the Messiah came, and, with his word, bestowed healing and abolished these many precepts which the law had reckoned should exist for leprosy.