“Theistic ethics” or Christian ethics?

I said in my previous post that some Christians might be worried by the fact that Ward’s Morality, Autonomy, and God doesn’t appeal to the Bible or specifically Christian revelation. Shouldn’t Christian ethics be informed by convictions specific to Christianity?

In his book Behaving in Public, Christian ethicist Nigel Biggar takes a position that is similar to Ward’s, but is in some ways more satisfactory (in my view) because he is more willing to draw on specific Christian doctrines. Like Ward, Biggar affirms a version of natural law:

To affirm natural law, then, should be to affirm the following: that there is a form of flourishing that is given in and with the nature of human being; that reflection on human nature can achieve an understanding of that flourishing and its component basic goods; that reflection on human experience can produce a grasp of kinds of disposition and action that respect and promote those goods; that all human beings are, despite their sinfulness, somewhat capable of an accurate grasp of basic goods and their practical requirements; and that, therefore, there are sometimes areas of ethical agreement between Christians and others.

However, Biggar also says that “revelation and faith” add both motivational and cognitive content to ethics:

None of this, however, makes the Christian theological salvation-narrative ethically irrelevant. It does not say that sinful humans have the motivation to do sufficiently what they know to be right, apart from the penitence, faith, gratitude, and hope that the story of God’s salvific initiative inspires. Nor does it say that they have the power, unaided by biblical tradition, to know completely what is good, what is virtuous, or what is right.

Like Ward, Biggar thinks that the hope for “postmortem fulfillment” can make moral aspirations more reasonable: “the presence or absence of theological faith and hope can determine what seems morally ‘reasonable.'” Yet, Biggar doesn’t appeal to a generic theism, but to specifically Christian revelation. An implication of this revelation is that there are certain goods beyond those identifiable by “natural” reason which are an intrinsic part of human fulfillment–goods like religious practices “designed to reverse our alienation from God.” In addition, God’s “revealed salvific ethic also involves a certain way of responding to injuries that other sinners cause: namely, through ‘forgiveness’ in the forms of forbearance and compassion and a will to reconciliation.” Although there can be agreement about temporal goods necessary to a relatively just society, the overlap between Christian ethics and other traditions within a pluralistic society will be “partial and provisional.”

I doubt Ward would disagree with much of that (he is, after all, a Christian); but an appeal to an unqualified or abstract “theism” obscures distinctive Christian doctrines and practices and elides the differences between Christianity and other theistic religions. For Biggar, the distinctive goods and  norms of action prescribed by Christianity derive their force from its specific salvation story. This isn’t an optional extra, but an integral part of what it means to do Christian ethics.