H. Richard Niebuhr has a great comment in which points out that both cultural (i.e., liberal) Protestantism and Fundamentalism share in common the desire to have a "Christ of culture."
How often the Fundamentalist attack on so-called liberalism -- by which cultural Protestantism is meant -- is itself an expression of a cultural loyalty, a number of Fundamentalist interests indicate. Not all though many of these antiliberals show a greater concern for conserving the the cosmological and biological notions of older cultures than for the Lordship of Jesus Christ .... More significant is the fact that the mores they associate with Christ have at least as little relation to the New Testament and as much connection with social custom as have those of their opponents. The movement that identifies obedience to Jesus Christ with the practices of prohibition, and with the maintenance of early American social organization, is a type of cultural Christianity; though the culture it seeks to conserve differs from that which its rivals honor .... In so far as the contemporary attack on Culture-Protestantism is carried on in this way, it is a family quarrel between folk who are in essential agreement on the main point; namely, that Christ is the Christ of culture, and that man's greatest task is to maintain his best culture. Nothing in the Christian movement is so similar to cultural Protestantism as is cultural Catholicism, nothing more akin to German Christianity than American Christianity, or more like a church of the middle class than a workers' church. The terms differ, but the logic is always the same: Christ is identified with what men conceive to be their finest ideals, their noblest institutions, and their best philosophy.
[H. Richard Niebuhr, Christ and Culture (New York: Harper and Row, 1951), 102-3.]
