What is the difference between religion and true Christianity? As Paul continues his letter to the Philippian believers, he explains the difference between mere religion and true Christianity. Religion will never suffice, only true salvation gives assurance of eternal life. Paul explained, “whatever were gains to me I now consider loss for the sake of Christ. What is more, I consider everything a loss because of the surpassing worth of knowing Christ Jesus my Lord.” There is nothing more important than having a personal relationship with Jesus. Are you merely religious? Or do you know Jesus personally?