The apostle Paul makes it very clear to the believers in Ephesus that they were different from the culture around them. The central text of this sermon shows us that those who are not Christians are actually darkness. Not just in darkness, but actually darkness. Conversely, followers of Jesus Christ are light. This speaks to two diametrically opposed essences and worldviews. This incompatibility should lead believers to avoid adopting the practices of the lost world. At the same time, we should shine the light of Christ into the darkness and lead others to His saving power and life.