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Russell believes that primarily, you must believe in God and immortality in order to be a Christian. However for those who might believe in God, yet are skeptical about the issue of immortality, are these true Christians? I believe a reasonable assumption would be the belief in God himself. For if someone believes in God, and God is immortal, hence should there be a question of immortality. Despite what conclusions I may draw, Russell clearly states that he "does not believe in God and in immortality; and secondly I do not think that Christ was the best and wisest of men." Although credit should be given when Russell states that "I grant him a very high degree of moral goodness." Yeah, don't be too modest Russell.
Russell also brings the issue of Christians must also have a belief in hell. The belief of an eternal hell of fire is something that many "attempting the good life" people may have an issue with. For if you "attempt the good life", yet fail there is an eternal fire awaiting you in the depths of hell. "Consequently I (Russell) shall not insist that a Christian must believe in hell." .
There clearly is no denying the fact that Russell views the existence of God a long and drawn out debate, stating that the explanation would keep us here "until Kingdom Come" , yet he does acknowledge the fact that the existence of God can be proved by unaided reason. .
I believe the simplest and easiest way to shoot down the existence of an ultimate being conceived as the perfect, is the argument of the First Cause. Now it is primarily important that knowledge of a first mover is understood. "It is maintained that everything we see in this world has a cause, and as you go back in the chain of cause further and further you must come to a First Cause." As for this first cause, many believe it to be God. Even without any notion of explanation, the argument that God is the First Cause clearly cannot have any validity.