The apostle Paul showed how different Christians must be from the world when he wrote: “This, therefore, I say and bear witness to in the Lord, that you no longer go on walking just as the nations also walk in the unprofitableness of their minds, while they are in darkness mentally, and alienated from the life that belongs to God, because of the ignorance that is in them, because of the insensibility of their hearts. ”
پولس رسول به مسیحیان نشان داد که چقدر باید با دنیا متفاوت باشند ،‏ و اظهار کرد :‏ « پس این را می‌گویم و در خداوند شهادت می‌دهم که شما دیگر رفتار منمایید ،‏ چنانچه امّت‌ها در بطالتِ ذهنِ خود رفتار می‌نمایند .‏