As members of the natural order, we are rather obviously imperfect, and no matter how much we try to improve ourselves, we fall short.
We have, historically, had gods, and I wish we had a different word for God, because the gods are not God. The gods represent bigger, better, more powerful conceptions of beings already in the natural order. They would be, if they were real, at the apex of the natural order.
Within the natural order, improvement, not perfection is the order of the day. We can approach perfection, but at a certain point we reach the asymptote. We would also reach the limits of our form. We see the sometimes perverse reality of this today with the transhumanist movement. They have the existential urge, the need really, to become God, but since we've really dropped the ball, they have no understanding of the fact that God became man so that we could become God.
So, they use an array of good improvements, ones that respect humanity, but they have a lot of potentially destructive plans when it comes to dealing with the asymptote. A technological faux after-life is a particularly scary fraud that could conceivably be perpetrated upon many people.
It is the uniqueness of Christianity that says God became man so that men could become God. In modern America, I suspect it is even more clear to say perfection became man so that man could become perfect, because then the Trinity can start making sense. The visual heresy of God the Father as an old man, is a heresy precisely because it destroys the deeper truth. Perfection surpasses being, and thus, perfection can be three persons in one being, especially since perfection has a plan. So, before the visual heresy began, God the Father would be depicted as light, or an empty throne- ineffable, unknowable, unattainable- because perfection is unattainable under our own power.
Jesus Christ is both God and man, and herein lies that crucial factor you cannot find in other religions. Jesus is the way, not because God wanted the entire planet to speak a name composed of two syllables, which is really the English bastardization of the Greek's way of saying the Hebrew name Yeshua, but because Jesus is the result of perfection solving the problem of the asymptote for us. Thus the biblical exhortations to be perfect, which, if you take them seriously, seem rather unfair unless you get what's going on here. Infinity is out of bounds to us, but the Infinite can handle the asymptote. Jesus is the way to perfection.
Like any practice, that which strengthens, humbles. The very actions that can make you bigger, stronger, or faster can make you feel quite puny, weak, and slow.
And for most practices there will always be a weight you can't lift or a race you can't win, but perfection holds out a promise of itself to those who would pursue it. I do not see this in other religions. Paradise, nirvana, or reincarnation- none of these actually answer our existential needs; they only defer or subjugate them. Even should the religion perceive their God as perfection, sans Christ you have this servant relationship with a servant's reward and no chance to achieve perfection.
Of course, this is lost on much of Christianity too. American Christianity is a fat lady with a Jesus loves me bumper sticker, driving erratically down the road, refusing to do a damn thing to improve her state, and deflecting every unfortunately brush with reality with nostrums hacked out of biblical texts. She has very little will, but an overdeveloped ego, so she keeps up her ego-driven practices long past the point that it is obvious she is helping no one, not even herself. At this point, the fat lady could get better with evolutionary theory as a framework for a little self-experimentation with a view to self-improvement. Once she got away from the T.V., the brain-addling pseudo-foods, and various artificial environments we find ourselves in modern life, she might become functional again. But I digress.
So try to remember this kids: Perfection surpasses form.
Update: I changed this from 'perfection surpasses being' to 'perfection surpasses form' in the hopes that it might be more clear.