What does Mark 1:32 mean?

Although news of Jesus' exorcism of the demon spreads like wildfire (Mark 1:23–28), physical travel has to wait until the end of the Sabbath that evening. The healings of the demon-possessed man and Simon Peter's mother-in-law (Mark 1:29–31) quickly overshadow the amazement at Jesus' authoritative teaching (Mark 1:21–22). Now, and for much of Jesus' ministry, His audience's attention is focused on miracles.

And Jesus has a lot to heal. In a time when "fever" is considered its own disease, medical sciences aren't very sophisticated. Many "healers" use magic spells, to at least con their patients out of money (Mark 5:25–34). Still, archaeological digs at ancient Roman military camps have discovered forceps, tweezers, wound retractors, needles, and scalpels, and wealthy Roman households included a physician on staff. But in Galilee, the poor didn't have such access, and internal injuries and illnesses were usually beyond the help of even the most skilled surgeons.

Along with the physically sick are many who are "oppressed by demons." Again, we don't know why there was so much demonic activity in the time of Christ. We do know that demon possession was not considered a sin, although if the demon arrived because the victim was practicing witchcraft, that would be an issue. Every time Jesus saves someone from demon possession, Satan's grip is weakened.