"Come out from among them, and be ye separate, saith the Lord" (2 Corinthians 6:17)
I dare to say that Christians who have genuinely come to love and trust Jesus Christ have also renounced this world and have chosen a new model after which to pattern their lives.
Further, we should say that this is the aspect of the Christian life that most people do not like. They want comfort. They want blessing. They want peace. But they recoil from this radical, evolutionary break with the world.
To follow Christ in this rough and thoroughgoing way is too much for them!
Actually, the true Christian dissents from the world because he knows that it cannot make good on its promises. As Christ's believing disciple, he is not left without a "norm" to which he seeks to be adjusted. The Lord Jesus Christ is Himself the norm, the ideally perfect model, and the worshiping soul yearns to be like Him. Indeed, the whole drive behind the Christian life is the longing to be conformed to the image of Christ!
Dear Lord, it is difficult to be a future citizen of heaven yet live and function in this present world. Help me live each day in a manner worthy of Jesus Christ (Philippians 1:27). Amen
~A. W. Tozer~