I saw one powerful force at work in downtown Chicago, where I attended a church full of diversity. Homeless people would sit on the pews next to M.B.A.s from Northwestern and the University of Chicago. Some of the M.B.A.s attended a class I taught, and I knew them as reserved, sophisticated seekers after truth. Yet during the week, from a visitors' balcony above the Chicago Board of Trade, I could watch these mild-mannered friends run around the floor, waving their arms in the air and screaming at the top of their lungs. They would later explain to me that the price of futures in pork bellies had been fluctuating wildly, and they were acting like madmen in order to lock in speculative shares of the price of hog innards for their clients. Money exerts a most potent force on human behavior.
When Jesus encountered this same force, which drove people to build beautiful palaces on the shores of the Sea of Galilee while some in Palestine lived as slaves, he recognized it as a spiritual power and gave it the name of the god Mammon.