You are touching on the deeper reason underlying the unsuitability of organized christianity to spread the word about Peak Oil.  Most of them (including the leaders and intellectuals) do not behave as Christians ought to.  In particular, they do not make a serious effort to find the truth and live according to it (Peak Oil being merely one example where this applies), and they do not seriously heed the Bible's stern warnings against the spiritual hazards of wealth and power.  These historically endemic realities go a long way towards explaining organized Christianity's failure with regard to Peak Oil.