In his book The Church before the Watching World, Schaeffer makes as some very penetrating observations concerning the Christian in this world. First, in the chapter Adultery and Apostasy: The Bride and Bridegroom Theme he insists that we remember our union to the Bridegroom and consider how we live in light of our loyalty to our husband—Christ Jesus. To commit apostasy is equal to spiritual adultery, which is to be whoring around, and this grieves God, it saddens Him and often dooms us forever.
Second, in the chapter Practicing Purity in the Visible Church, he holds that to practice purity in the visible church, three things are essential which if removed, then the practice of purity can’t be realized. First, there must be church discipline for those who hold not to historic Scriptural orthodoxy and the creeds. Second, exiting the church or the denomination has its place (Mic.6:8) and third, we must remember that the world is under God’s judgment—on fire! So, we must exemplify a commitment to scriptural historic Christianity, a commitment to courageous loving discipline, a commitment to a winsome departure when necessary, and a commitment to a lost and dying world.
Third there are Absolute Limits that must be maintained if our witness will remain faithful to Christ. There are again three essential pillars that must be upheld for our view to be truly Christian. They come under the pre-fall and post-fall categories and can be stated as Creation, Fall, Redemption, and Consummation.
Pre-Fall: First, The truth of the Trinitarian God who is there, who is the ultimate Creator and sustainer of everything that exists. Post-Fall: Second, Human rebellion is real and consequently needs genuine rescue. Third, the God/Man is the Redeemer of man by virtue of his life, death, and resurrection and his work secures the believers hope. Lastly, final judgment is assured. For believers this means life, for non-believers eternal torment.
To jettison absolute truth is to dispose of the Historic Christian faith as a system of thought. Hence while disagreements obtain among true believers, there still remains a circle of orthodoxy that has boundaries. These lines must be clearly maintained so that the essence of Christianity is not lost.