A.B. Simpson emphasizes that true Christianity transcends mere religious systems and imitation of Christ, highlighting the profound union believers have with Jesus. He asserts that Christ is the source of our life and experiences, and that the goal of redemption is not to restore us to Adamic perfection but to unite us with Christ, elevating us to a higher spiritual plane. This understanding reconciles various teachings about the Christian life, focusing on a personal relationship with Jesus rather than theoretical debates. Simpson encourages believers to depend on Christ's power and grace for their spiritual journey.

Christianity may mean nothing more than a religious system. The Christian life may mean nothing more than an earnest and honest attempt to follow and imitate Christ. The Christ life is more than these and expresses our actual union with the Lord Jesus Christ. He is actually in us as the life and source of all our experience and work. This conception of the highest Christian life is at once simpler and more sublime than any other. We do not teach that the purpose of Christ's redemption is to restore us to Adamic perfection, for if we had it we should lose it tomorrow. Rather, it is to unite us with the second Adam, and to lift us up to a higher plane than our first parents ever knew. This is the only thing that can reconcile the warring elements of diverse schools of teaching with respect to Christian life. The Spirit of God will lead us to have no controversy respecting mere theories. Rather, we are simply to hold to the person and life of Jesus Christ Himself and the privilege of being united to Him through living in constant dependence upon His keeping power and grace.