The Sign of the Gospel: Toward an Evangelical Doctrine of Infant Baptism After Karl Barth - Paperbackby W. Travis McMaken (Author) The theology of the sacraments is one of the most contested parts in Barths theology, none more so than the doctrine of baptism. Barths proposals on baptism have generated intense conversation and disagreement, not only on its application to Protestant and ecumenical theology but even on its own consistency with Barths larger dogmatic project. McMaken takes up this controversial question, sets it in its proper context