There are some beliefs that are quite common to Christianity. These belief systems are not practiced by all members of the Christian faith, but some of their associated values are shared. Nevertheless, one aspect that seems to be most consistent to all groups that practice Christianity is the fact that there is the belief in God. Now, deeper viewpoints as to the details of his existence and exactly how it is that he exists varies across different members of the Christian faith, but one of the key factors that distinguishes those that follow and practice Christianity is the belief in God. The further extent of this core belief of Christianity is the fact that members of the Christian faith believe, not only is there a God, but that there is only one God.