What does Mark 1:37 mean?
Within the span of half a day, Simon Peter goes from humble fisherman to the host of the most famous person in Capernaum. After Jesus healed a demon-possessed man and a woman with a fever, "the whole city" comes to Simon Peter's door to see if Jesus can heal them, as well (Mark 1:32–33). The next morning, the crowd presumably returns, asking for Jesus and disrupting Simon Peter's household. His response is to gather a small group, probably including his brother, Andrew, and Jesus' other two disciples, James and John, and search for Jesus. They are not the only ones curious; "everyone" is looking for Jesus at this moment.It's unclear what Simon Peter expects, here. He has, at least temporarily, left his fishing business to follow and learn from Jesus (Mark 1:16–18). Now a crowd grows outside his front door. In Luke 11:9, Jesus teaches that those who seek for God's blessings will find them. James 1:5 says "If any of you lacks wisdom, let him ask God, who gives generously to all without reproach, and it will be given him." Simon Peter realizes, while he does not know what to do next, Jesus does, so he searches for Jesus and finds Him. Jesus' solution to the gathering crowd is perhaps not what Peter expected: leave Capernaum and spend three years preaching all over Israel, but Peter follows.
This event is told from the perspective of Simon Peter, further making the case that Mark's Gospel is based on his eyewitness account (Mark 1:36).