Ephesians 4

Paul wrote that believers in Christ should be united in purpose through Christ. Christians should not act the way the rest of the world does because Christ has renewed us and calls us to a higher standard of living.

The Christian life needs to be visibly different from the rest of the world; we are called to a higher standard. That's not to say that our lives are easier, but that we handle life's troubles without compromising ourselves and that we treat others with love and respect. Our attitudes and actions ought to be a reflection of the God that we serve.