As your last statement alludes, this is your positing. This kind of wonderful mythic truth that does not exist on the same plane of quotidian truth that, say, the law of gravity exists. So we have our mythic covenant, and like you, I revel with pride in it, but I look around and see that all peoples and all civilizations create for themselves stories of specialness as befits their particular cultures, and many relate to God. Now, the failure to see our covenental relationship in this framework is the first step to chauvinism. Now I am certain this is not where you understand the idea of the Covenant leading us, but I ask that you see this ramification.
Nature is egocentric and Darwinian.
Emile Durkheim's work on suicide early in this century sheds an interesting light on this dichotomy. And so I protest your analysis, for it gives altruism a bad name. Certainly altruism is egocentric if we assign to society an ego. What you have done here is understood a theoretically proposed selective process through many generations which creates new characteristics in living creatures called the theory of evolution. This is, in capsule form, how I see the basis by which you come to use this terminology to reject nature, and to revert to what you now consider a higher form of belief in Covenant as core belief.