If your life is characterized by a pattern of conscious sin, you very likely are not a Christian. If some of your most cherished thoughts are hatreds, if you are determined not to forgive, you may not be a true believer. If you are a committed materialist who finds that your greatest joys are self-indulgence — clothing your body with lavish outfits, having all your waking thoughts devoted to house, cars, clothing, and comforts — you may not be a Christian. If you are a sensualist who is addicted to pornography, if your mind is a twenty-four-hour bordello — and you think it’s okay — you may very well not be a Christian, regardless of how many times you have “gone forward” and mouthed the evangelical shibboleths. Election ultimately results in holiness, but the process begins now. Are you concerned for holiness? Are you growing in holiness?
(R. Kent Hughes, Ephesians: The Mystery of the Body of Christ, Preaching the Word [Wheaton, IL: Crossway Books, 1990], 25-26)