When you look at the whole chapter, you realise that this is not just about our personal sin, striving against my sin, seeking with the help of God and the blessing of the Spirit to overcome the sin tendency and to please Christ, to honour the new nature which is in me and to suppress the old nature. It is far more than that; this is a picture of Christ’s whole mission and the mission of his church on earth.
The people to whom this letter is sent have suffered quite considerably, as we noted in chapter 10:33-34. There had perhaps been all kinds of phoney charges brought up before the magistrates and they had been ordered to surrender their goods and possessions. But they are told you have not yet resisted under blood; you have not yet had any martyrs. Today, churches in the UK are not even suffering churches; it is comparatively easy to be a believer. Nobody will confiscate your goods; nobody will take away your employment because you are a believer today. Maybe it will come; maybe it will return. And yet the inspired author says to them, ‘You have not even been called upon to the martyrs yet.’ Surely he would say to us, ‘You have not even been called upon to forfeit your goods and your comforts and your jobs yet. Isn't it so much easier for you to take up the privilege of being entirely for Christ?
Here is our calling: to be involved in this great campaign against the forces of unbelief, to be witnessing, keeping the culture of the world out of our lives and out of the church, repudiating the tempter and his demons, dealing with doubts and trials by faith, putting away false teaching. This is our battle to represent Christ to the very end of life's journey. All else is futile: take a pace back, lift up your eyes. You are called and equipped and commissioned in the greatest campaign and battle in the history of the world.