Transforming Culture: "selling the heavenly birthright for a mess of earthly pottage"

A religion that has ceased to set its face towards the celestial city is bound sooner or later to discard also all supernatural resources in its endeavour to transform this present world. The days are perhaps not far distant when we shall find ourselves confronted with a quasi-form of Christianity professing openly to place its dependence on and to work for the present life alone, a religion, to use the language of Hebrews, become profane and a fornicator like Esau, selling for a mess of earthly pottage its heavenly birthright. – Geerhardus Vos, Grace and Glory, p. 119