Greater Boston Interfaith Organization. We build power across racial, ethnic, class, religious and neighborhood lines for the common good. Organizing for the greater good. The Greater Boston Interfaith Organization (GBIO) is a broad-based organization that works to coalesce, train, and organize the communities of Greater Boston across religious, racial, ethnic, class, and neighborhood lines for the public good. Our primary goal is to develop local leadership and organized power to fight for social justice. We strive to hold both public and private power holders accountable for their public responsibilities, as well as to initiate actions and programs of our own to solve community and economic problems.