It's so easy to just go through life on auto-pilot, doing what comes naturally and just blindly following our own instincts and desires.  Spirituality, then, can be understood as a kind of waking up, a coming to attention of the reality of God's presence around us and in us.  

Paul writes to a group of people and encourages them to make a clean break from their old lives of sin, to take off the clothes of their old life and put on clothes that now fit their new life with God.  He addresses specific behaviors that they should stop doing as well as ones they should begin.  Read in isolation, these verses sound like a daunting DIY project of salvation by works.  

However, Paul could not be more clear that God is the one empowering them to change from the inside-out and to begin to live in new ways. God is the one who shakes them from their spiritual slumber: "Wake up, sleeper, rise from the dead, and Christ will shine on you." (Ephesians 5:14)

Paul invites them into a new reality of paying attention to God's movements in their daily lives, a life where they are saturated, waterlogged even, with God's presence: "Be filled with the Spirit." (Ephesians 5:18)