“Behold, I was shapen in iniquity; and in sin did my mother conceive me.” Psalm 51:5 The last two decades of social development in western nations has seen an almost incomprehensible shift in moral reasoning that is so vast in its reach that it has been rightly called a “moral revolution.” Rather than a gradual slide in private morality, this revolution has come in the virtual blink of an eye and within plain view. What was once taboo—especially in the sphere of human sexuality—is not only permitted but glorified as an embrace of diversity and a vindication of the vulnerable...