To explain why we are facing this flood and these crises we have to think through covenant, love and gift. We will examine them not because these are religious ideas, but because they are fundamental economic ideas. When we attempt to understand economics without them, we achieve incoherence. Economics has indeed tried to understand human interaction and exchange without the concepts of covenant, love and gift, and the result has been the bankruptcy of economics and a crisis that is both social and economic.
Douglas Knight about theological economics