And immediately he left the synagogue and entered the house of Simon and Andrew, with James and John. Now Simon's mother-in-law lay ill with a fever, and immediately they told him about her. And he came and took her by the hand and lifted her up, and the fever left her, and she began to serve them. That evening at sundown they brought to him all who were sick or oppressed by demons. And the whole city was gathered together at the door. And he healed many who were sick with various diseases, and cast out many demons. And he would not permit the demons to speak, because they knew him.
Immediately following his teaching and exorcism in the synagogue, Jesus goes into the house of Simon and Andrew in Capernaum. Why are they in Capernaum? Jesus' homebase was the port city of Capernaum on the Sea of Galilee. Bethsaida, the home of the first four fisherman disciples, was just a few miles north of Capernaum.
The fact that Simon Peter's mother-in-law is mentioned brings out another difference between Simon Peter and the rest of the disciples. Most church traditions hold that Peter was the only disciple who was married. This also breeds the tradition that Peter was older than the rest of the disciples since he was married and had apparently established himself in the trade of fishing.
The whole city of Capernaum is said to have assembled outside the door. Capernaum is estimated to have had about 4-5000 citizens in the first century. That is a great testimony to the verse that precedes this section: "And at once His fame spread everywhere throughout all the surrounding region of Galilee" (v28).
Mark 1:35-39
And rising very early in the morning, while it was still dark, he departed and went out to a desolate place, and there he prayed. And Simon and those who were with him searched for him, and they found him and said to him, "Everyone is looking for you." And he said to them, "Let us go on to the next towns, that I may preach there also, for that is why I came out." And he went throughout all Galilee, preaching in their synagogues and casting out demons.
Much before dark, Jesus got up and went to a private place to pray. Many of the early church fathers took this and other passages to show that Jesus was a praying Savior. They pointed to the continual references to Jesus going off by Himself to pray.The disciples search and finally find Him, saying, "Everyone is looking for you." Jesus replies, "Let us go on to the next towns." Let's not stay here but go on because I came to preach and deliver the Gospel and the kingdom of heaven.
Mark 1:40-45
And a leper came to him, imploring him, and kneeling said to him, "If you will, you can make me clean." Moved with pity, he stretched out his hand and touched him and said to him, "I will; be clean." And immediately the leprosy left him, and he was made clean. And Jesus sternly charged him and sent him away at once, and said to him, "See that you say nothing to anyone, but go, show yourself to the priest and offer for your cleansing what Moses commanded, for a proof to them." But he went out and began to talk freely about it, and to spread the news, so that Jesus could no longer openly enter a town, but was out in desolate places, and people were coming to him from every quarter.
While going through Galilee, Jesus is approached by this leper. There isn't any markers saying where or when this happened. It's some time while Jesus is going about the region of Galilee, going onto the "next towns".
The major theme of this miracle is the physical touching of the leper by Jesus. The Mosaic Law had said touching a leper was forbidden and made one unclean. There were different forms of leprosy and many were afraid that most forms were contagious and transferred by contact. But the touching is the major point.
Origen (Fragments on Matthew 2.2-3) writes:
He touched him in his untouchability, that He might instruct us in humility; that He might teach us that we should despise no one, or abhor them, or regard them as pitiable, because of some wound of their body or some blemish for which they might be called to give an account. ... The hand of the Lord is found to havfe touched not a leper, but a body made clean! Let us consider here, beloved, if there be anyone here that has the taint of leprosy in his soul, or the contamination of guilt in his heart? If he has, instantly adoring God, let him say: "Lord, if you will, you can make me clean."
John Chrysostom (Gospel of St. Matthew, Homily 25.2) preached:
If He cleansed him merely by willing it and by speaking it, why did He also add the touch of His hand? For no other reason, it seems to me, than that He might signify by this that He is not under the hand of the Law, but the Law is in His hands. ... He touched the leper to signify that He heals not as servant but as Lord. For the leprosy did not defile His hand, but His holy hand cleansed the leprous body.
Was Jesus abrogating the Law of Moses? Was He throwing it out the window? Not according to Ephrem the Syrian (Commentary of Tatian's Diatessaron), where he writes:
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.
After healing the leper, Jesus instructs him to tell no one. Venerable Bede writes about the leper's inability to follow this command (Exposition on the Gospel of Mark 1.1.45):
In the performance of this miracle Jesus requested silence. Yet it did not remain concealed in silence for long. So it is with the called people of God--while following His precepts and example, they may prefer their responsible actions to remain unspoken, yet for the benefit of others providence may allow them to become known contrary to their own wishes.
This is quite applicable to the Christian's life. Many Christians do many great works without a desire to receive attention for them. But many times those acts become quite public despite the original intentions. This is because those who benefit from these good works are so overjoyed that they can't help but tell others about it. So with this healed leper in Galilee.