John Trapp on Mark 1:23

Verse 23. With an unclean spirit] Gr. In an unclean spirit. An unregenerate [non-Latin text not transcribed]. man is in maligno positus, as St. John saith of the world. He is inversus decalogus: whole evill is in man, and whole man in1 John 5. 19. evill, till at last (without grace) he be satanized and transformed into a breathing Devill. By reason of the inhabitation of unclean spirits, our spirits have in them Trenches Cages, Forts and strongholds of Satan, 2 Cor. 10. 4.