An admittedly controversial element of post-evangelicalism is that many in the emerging movement are skeptical about the "in versus out" mentality of much of evangelicalism. Even if one is an exclusivist (believing that there is a dividing line between Christians and non-Christians), the issue of who is in and who is out pains the emerging generation.

Some emerging Christians point to the words of Jesus: "Whoever is not against us is for us" (Mark 9:40). Others, borrowing the words of the old hymn, point to a "wideness in God's mercy." Still others take postmodernity's crushing of metanarratives and extend that to master theological narratives—like Christianity. They say what really matters is orthopraxy and that it doesn't matter which religion one belongs to, as long as one loves God and one's neighbor as one's self. Some even accept Spencer Burke's unbiblical contention in A Heretic's Guide to Eternity (Jossey-Bass, 2006) that all are born "in" and only some "opt out."

This emerging ambivalence about who is in and who is out creates a serious problem for evangelism. Read the whole article here http://www.christianitytoday.com/ct/2007/february/11.35.html

Written by Scott McKnight for Christianity Today. I disagree with him on some points, but it is a well balanced and written article