Environmental destruction, poverty in the midst of obscene wealth, one war after another. Our biggest crises are getting worse. Secularism makes this inevitable by denying any moral authority higher than the ruling classes. By contrast, religious traditions offer accounts of who made us, for what purpose and how we should live, but whilst some are more constructive than others it is only monotheism, defined as divine harmony, that provides the philosophical and ethical framework necessary for people to lead better lives. Drawing on cultural analysis, political philosophy, Christian...