Of the world? Or not of the world?

When our worldview is attuned to God’s plan to rescue people from every nation, making them part of God’s family, we are not of this world. Being of this world is to be absorbed by the world’s concerns and living accordingly. Unbelievers should be able to tell from our speech, behavior, ethics, and attitude toward others that we’re not cynical, selfish, or harsh—that our focus is not on getting ahead or on using people. We should not live to gratify ourselves. We are to be the antithesis of these things. In other words, we are to live as Jesus lived. People wanted to be around him because he wasn’t like most everyone else.— Supernatural: What the Bible Teaches about the Unseen World—And Why It Matters, pages 144–45