Mark 1:23
And there was in their synagogue a man with an unclean spirit; and he cried out,
Cross-references
In Mark 1:34, Jesus casts out many demons — demonstrating the same authority over unclean spirits he exercises in the exorcism.
Mark 3:11 generalizes that unclean spirits fell before Jesus and proclaimed Him — the same recognition seen in the synagogue demon.
Mark 9:25 records Jesus rebuking a deaf and mute spirit — the same authoritative command over unclean spirits as in the synagogue.
Mark 5:2 describes another man with an unclean spirit — a recurring pattern of demonic recognition of Jesus' authority.
Mark 7:25 presents another person with an unclean spirit seeking Jesus — extending the pattern of demon-possessed coming for deliverance.
Luke 4:33-37 provides the synoptic parallel to this exorcism, including the crowd's reaction and Jesus' fame spreading.