This dissertation examines the doctrine of Trinity as it appears in the works of Karl Rahner and Hans Urs von Balthasar, arguing in defense of Balthasar\u27s position, while also in agreement with much of Rahner\u27s position. Through an exposition and analysis of the major writings of both authors on Trinity, the dissertation focuses on the central divergence between them - namely, whether the Trinity is an eternal communion of three divine persons sharing mutual love (Balthasar), or whether this is a heretical distortion, and the Trinity should instead be understood as God\u27s capacity for self-communication to the human being (Rahner). Rahner maintains that the personal distinction of Jesus from the Father must be grounded in his humani...