"When the unclean spirit is gone out of a man, he walketh through dry places, seeking rest, and findeth none. Then he saith, I will return into my house from whence I came out; and when he is come, he findeth it empty, swept, and garnished. Then goeth he, and taketh with himself seven other spirits more wicked than himself, and they enter in and dwell there: and the last state of that man is worse than the first. Even so shall it be also unto this wicked generation." ~ Matthew 12:43-45 KJV (emphasis added)
The enemy's goal is to take total possession of our soul (mind, emotions, will) = Bondage!
For many this is a cycle. The battlefield is the mind. His strategically plants seeds and when entertained we come into agreement and it produces a negative emotion. A verbal or physical reaction is birthed - what you say or do in this state opens the door and gives the enemy legal access. Repentance, forgiveness and obedience is the key to shut the door!