The letter to the Romans has the longest greeting of any of Paul’s epistles, nearly twice as long as the next longest, and three times longer than most of them. The greeting breathes the sovereignty of God.
In salvation a miracle takes place in us also, and turns us from worldlings into Christians, from people who are spiritually dead to those who are spiritually alive, and we become owned people, subject to Christ’s authority, dependent upon him. Yet we too are not entirely slaves, because we shall with him inherit all things, and we were brought to do submit of our own volition entirely freely. No slave is in that position.
We are not apostles, but if you are saved, if you have come to Christ, you also are a slave in the sense that he was a slave, and you are also separated from the world. Now there are some Christians, perhaps many supposed Christians worldwide, and they are still worldlings. They love this world. They think they love Christ. They think they trust Christ. They think they believe in Calvary and their sins are forgiven, and yes, they have cleaned up their lives a little, but they are still chiefly for this world, a lovely home, an even lovelier home, an even bigger car, and even more cars, an even better job, and even more money, and they go to church maybe once on a Sunday, and that's it. Because so much of the world is still in them, and they have the world's entertainments, and the youngsters enjoy the rock and the pop and the world's entertainments in spite of its saturation with godlessness and sin and its promotion of an anti-god culture and free sex and so on. They love these things. They have never been separated from the world. They haven't had that experience where, suddenly, after coming to Christ, they were willing to part with worldly things, and they turned from them. They haven't had the complete miracle of conversion. The apostle was separated for the gospel, but every Christian is separated from the world. You won't come across a true Christian who says to you, I don't see why I should give up this. I don't see why I should give up that. The true Christian intuitively knows and gives it all up and turns away. Then you know the person is truly saved, separated unto the gospel of Christ.
Christian people think in exactly opposite way to the Western world at the present time. These days, liberty is everything. The creed to which everyone adheres – our opinions are what counts. Public opinion, what most people think. How are we going to decide what is moral? How are we going to decide what is ethical? Oh, public opinion, what most people believe to be the case. What a flimsy authority for life! But we have one authority for what God is like, what is the truth, what we are to believe, how we are to be saved, how we are to conduct ourselves in our lives as individuals, how our church is going to operate and be governed. There is one authority, and that is the word of God. And Paul is at pains to tell us this in the very beginning.