Paul doesn’t say, “you once were in darkness” and “now you are in light;” he says “you were darkness” and “you are light.” Like “you are what you eat,” these are ontological claims. Paul asserts that our being is transformed as a result of faith, or as a result of grace. He goes on to note that there is a connection of truth, goodness and justice to light. These are things we become, not just things we believe or even practice. In the Lord, we are light. We are truth. There is a power in fearless visibility that attracts and inspires and brings “light” to others. However it may be manifested, it takes one out of oneself into new territory, and unleashes God’s light, reflects it into the world.