The third miracle: The Cleansing of the Leper.
The leper is the non-Jewish people of Galilee. Leprosy is a contagious disease; in the Ancient World it was incurable, and the leper was put under strong quarantine: the disease ostracizes the sick.
In parables leprosy and the leper symbolize ostracism, i.e. exclusion from the religious community (probably 2 Kgs. 5). The governor Jesus wants to take all the people under the authority of the monarch: he needs them all for the economic boom, strengthening the economic power of the tetrarchy.
Jesus wants to tear down the barriers erected by the Jewish aristocracy to exclude the non-Jewish Galilean from the profits of the economic prosperity.
Jesus cleanses the leper. The miracle is not that he can break the laws of nature: the wonder is that someone is suddenly able to give the same rights to the Galilean lower class as to the Jewish upper-class.