By fallible you mean imperfect? Well, God is perfect. Imperfection can't dwell with Perfection for eternity, without a price. We must first be made perfect through Jesus. And perhaps our ability to sin is to show us that we aren't equal with God. That we are below Him, and that we need Him in order to live. Edit: A Christian is a follower of Christ, indwelt with the Holy Spirit of He, and raised back to eternal life through the price He paid. When people refer to Christianity as a religion it makes me angry, because it's not about religion and dogma, but about faith. Going to church doesn't make you a Christian. Giving your life over to God, and letting Him live through you is what makes you a Christian.