Therefore, putting aside all filthiness and all that remains of wickedness, in humility receive the word implanted, which is able to save your souls. (James 1:21)
A prevalent strategy that Satan seeks to introduce into your life is to get you to leave the kingdom rule of Jesus Christ and come back over to his. Much of this happens through the division of the secular and the sacred. This is done when you attend and participate in church under one kingdom, then you go out into the world Monday to Saturday and function there under the influence of another kingdom. You might do a Bible study in one kingdom, then do your socializing under the influence of the worldview of the other kingdom—Satan’s domain. Essentially, when you flip-flop kingdoms depending on the activity you are participating in, or the day of the week, you do not fully actualize or experience the victory and rule that comes with the abundant life in Christ.
Satan ends up ruling people’s lives because they are yielding the power to him—not by way of any rightful authority that he has but simply because of a failure to align their thoughts and decisions under the lordship of Jesus Christ. By not giving Jesus Christ the proper place in your home, church, work, relationships, entertainment choices, and wherever, you lose the full presence of His covering.