Those who think that modern times are wickeder than previous times are apt to identify the cause as the weakening of a sense of moral law, associated with the departure of religious traditions of morality as a social influence... Such views give comfort to apologists for religion, who fasten on the implication that to revive a culture of moral concern people must be encouraged back into churches. But this reprises the usual muddle that getting people to accept as true... such propositions as that at a certain historical point a virgin gave birth, that the laws of nature were arbitrarily suspended so that, for example, water turned into wine, that several corpses came to life (and so forth), will somehow give them a logical reason for living morally (according to the attached view of what is moral - e.g. not marrying if you can help it, not divorcing if you do, and so forth again). It is scarcely needful to repeat that the morality and the metaphysics here separately at stake do not justify or even need one another, and that the moral questions require to be grounded and justified on their own merits in application to what they concern, namely, the life of human beings in the social setting.
A.C. Grayling, What Is Good?
ethics, religion