Hristians should take more interest in ethics

Pope Benedict said, a?The events of the last two or three years have demonstrated that the ethical dimension must enter into economic activity. Now is the time to see that ethics is not something external, but internal to economic rationality and pragmatism.a? Brit Hume suggested that the financial collapse was caused by a widespread lack of, a?first, ethical behavior by the government; second, ethical behavior in financial markets; third, ethical behavior by mortgage lending banks; and fourth, ethical behavior on the part of the public.Read Exodus 20:15; Deuteronomy 25:13-16; and Luke 19:1.
How do passages like these lead us to see that Christians should take more interest in ethics and the role of ethics in the economy?