Jakob Karl Rinderknecht is the Director of the Pastoral Institute at the University of the Incarnate Word. His research centers on the implications of embodiment for theology, especially relating to sacramental and linguistic mediation. Some of this work was recently published as Mapping the Differentiated Consensus of the Joint Declaration, and he is currently editing a collection of essays on the uses of cognitive linguistic theory in theology. He is in the initial stages of a new project investigating understandings of sacramental validity and their implications for ecumenism.