In regard to the Deuteronomy passage, some considered fever to be a divine chastisement curable only by the intervention of God. The implied answer is that no one can extinguish except God. The rabbis regarded fever as both demonic and as a divine punishment. This suggests, as do the other two instances in the New Testament, that the cause of the fever was supernatural, either demon-induced or divine punishment. This is something that only God or God's agent could do.
Service is a characteristic of discipleship.
This miracle reveals that Jesus heals so that one may serve better. That same evening, the entire town came out to the house, and there Jesus healed them all. In the area of Capernum, there is no desert. Yet, After Jesus' victory in the desert, however, it has become a place where one can seek solitude and prayer and receive divine replenishment and where angels give succor. The desire for secluded prayer makes it plain that Jesus is not a sorcerer working by magic independent of God's help.