Christianity isn’t a religion; it’s a relationship. This is, perhaps, the most common naïve Christian slogan. I consider it naïve for two reasons. First, because it is not true, and second, because while it is used to counter one valid problem, it implies a view of the Church which is just as large of a problem.
When Christians claim that Christianity is a relationship and not a religion, they intend to distance it from cold ritualism. I agree with this sentiment wholeheartedly. Performing a service for the mere sake of performing a service, or saying a prayer merely for sake of saying a prayer are both wrong and ought to be avoided. Worse yet is for a man to perform a service or say prayer for the sake of convincing himself that he is not a bad man, or for assuming that these acts prove his goodness and allow him to stand before God. The purpose of our services and our prayers is to both worship God and be edified in our pursuit of Him; our righteousness before God is Christ alone, not anything of ourselves.
The trouble, then, is not the sentiment of the statement. The trouble is the statement. My copy of Webster’s New Collegiate Dictionary defines religion in the following words.
Religion: 1) the service and worship of God or the supernatural; 2) a personal set or institutionalized system of religious attitudes, beliefs, and practices.
Clearly, the dictionary entry contained more than those first two definitions, but none of the other definitions could be construed in any way that would disqualify Christianity as a religion. Christianity is and always will be a religion. More Here...