What the word of God calls us is what we should be: ‘holy brethren, partakers of the heavenly calling’. This is not because we are already made perfect, but because we have started out on a road that leads to perfection once we have received our resurrection bodies.
Consider the Lord. This is the solution to so much in the Christian life. How do we maintain assurance? How do we maintain strength against temptation? How do we face our trials and our difficulties? How do we carry out service for the Lord and his witness? By considering him. This is the great strengthening means of believers.
If we trusted in Christ and experienced salvation, we are holy brethren, those who are set apart by God. We are set apart and distinct from the world in the mind of God, because Christ has died for us and lived a righteous life and that righteousness has been imputed to his people. In the mind of God, it as though we have experienced final redemption and purification and are in heaven already. Never has the world pressed in upon believers as it does today with all the means of communication and the television and every other electronic device, and yet we are to be separate from it in our standards, our views, our desires, and our lifestyle – holy brethren set apart for the Lord. That is often lost sight of so today. The cry among many – even earnest Christians – is that we've got to be more like the world in order to win the world. But we are described as holy, sacred utensils in the temple of God. Those utensils for worship that had been cleansed and set apart, and sacred, dedicated, to holy use. That's the picture language of the Old Testament.
Either by preaching of the word of God, by reading Scripture, or through the witness of believers, the Holy Spirit has moved in the heart and you have been arrested and called. You have been called intelligently by the word you have understood your spiritual need and what Christ has done to redeem you. You have virtually been called by name; it is a wonderful thing about conversion that when God works in our hearts we feel a personal obligation to respond. It is the as though God is dealing with us and us alone. I become deeply concerned about my eternal destiny, my standing before God, and whether there is mercy for a sinner like me. The call indicates God's initiative. He calls to us, he stirs our hearts, and our foolish pride falls in tatters and we see our need of forgiveness and salvation. It wasn’t me. I didn't have the bright idea one day to begin to consider the things of God; I was heedless, proud and indifferent. I didn't see the work of the tempter in my heart. I thought the world was a great place, and I was in contemptuous of the gospel. It was God who made me feel my inadequacy and spiritual bankruptcy. It is a call to join the heavenly road, a call to eternal glory. Coldness in the Christian life begins when we cease to have that experience of calling. As we read the Scripture in our private devotions, we say, I must respond to this. The heavenly calling wasn't just the call of the gospel at the very beginning; it’s a call that goes on, echoing in your life. Whenever you pray and confess your sin, a challenge will come, a sense of obligation to respond to this yourself. Somebody may be praying for a loved one, that that person will find the Lord, and suddenly there will enter into you this uneasy realisation, ‘But I am to be the instrument and I haven't said anything.’ There is interaction between the Spirit and yourself. All through the Christian life we are aware that we are preparing for eternal glory, and we are moving to heaven. It’s a mighty strength to us, because all the difficulties and the hardships are greatly softened by the fact that we are heaven bound. We are called to learn of Christ. We are called to serve him, obviously. We are called to fellowship with Christ and one with another. We are called to represent him and to speak for him. We are also called to holiness.