This essay presents a post-metaphysical reading of Karl Barth's Trinitarian approach and its critical follow-up in the work of Eberhard Jüngel. For this purpose, part one gives three important examples of the post-metaphysical core element, namely the transformation from thinking in ontological substances to an understanding in hermeneutical processes. Part two is dedicated to the beginning of Barth's Church Dogmatics restructuring its main argument by five transitive identifications. Accordingly, God as God's effective reality is the word event as God's address to his creatures. Part three uses Jüngel's paraphrase to clarify constructively a post-metaphysical, but nevertheless Trinitarian theology in the wake of Barth. A concluding remark meets the question as to in which precise sense this program is located post metaphysica.