Does social justice promote Christian unity? With reference to paragraph 12 of Unitatis Redintegratio--Vatican II's declaration on ecumenism--this book argues that an emphasis on justice and unity without proper consideration of social context actually risks obscuring a clear public declaration of Christ, by having Christians uncritically accept the presumptions that underpin the sociopolitical status quo. This constitutes a failure in Christian interpretation, the crux of which is a failure in ecclesiology. Matthew John Paul Tan suggests the beginnings of a corrective with reference to works by Pope Benedict XVI, theologians such as Graham Ward, and postmodern theorists like Michel Foucault. Ultimately, Tan invites the reader to begin considering how answering this seemingly simple question will implicate not only theology, but also philosophy and political theory, as well as considering the need for the church to engage in a bolder confessional politics in place of the politics of the public square often favored by Christian and non-Christian commentators.