In laying out the specifics of what it looks like to be God’s people, Paul brings together an idea that may be familiar: light. Not only does light expose things (which means we should conduct ourselves as citizens of the Kingdom), but it also wakes us in the morning. That same light which exposes also brings people to knowledge of itself. This is the work of the Spirit, raising us from our prior ignorance of God so we can see that he was there all along, even if we weren’t aware.