In my limited experience with those from the Emergent Community, some good experiences, other not so good, have led me to see that their search for truth is not found necessarily in a body of doctrinal beliefs, even though they all have a body of beliefs, but their search for truth is in a body of spiritual practices. What I mean by that is that those in the emergent community are more interested in being doers of the word and not hearers only. In their Bible study they may come across a spiritual practice like fasting, which is commended by scripture to participate in, as they begin to participate in that practice they will begin to ask the question, "how does this affect my theology?" Or they may hear the words of Christ, "Blessed are the peace makers..." and they begin to contemplate what the practice of a peace maker would be and then ask, "how does this affect my theology?" Instead of having a body of beliefs that lead to their practice, they begin with "Spiritual Practices" that they find in scripture and allow those practices to be the launching pad for evaluating their theology. Most of the Emergent pastor that I have known have also used the Bible, along with the spiritual practices, to help define their theology.
As conservative evangelicals we are more comfortable with starting with our set of beliefs. Our beliefs, our theology, is our sacred cow. But for the emergent it is the spiritual practices, the doing of the word that is sacred to them. In reality both are important. James is the one who said that faith without works is dead. Belief without practice is useless and maybe not even real belief at all. But practice without right belief can turn into idolatry. There is a fine tension that must exist.