This is in What Baptism Portrays
Local Christian communities, called churches, are built around shared Biblical convictions, some of which are essential for salvation and some of which are not. We do not define our covenant life together only by the narrowest possible set of beliefs one must have to be saved. We believe rather that the importance of truth and the authority of Scripture are better honored when communities of Christian faith define themselves by clusters of Biblical convictions and stand by them, rather than redefining the meaning of membership each time one of their convictions is disputed. When different Christian communities can do this while expressing love and brotherly affection for other believers, both truth and love are well-served. For example, the fact that many of the speakers we invite to the Bethlehem Conference for Pastors could not be members of this church says that we take love and unity seriously and we take truth seriously.