Abstract
This paper examines Küng’s procedure in justifying God at the bar of reason. He first counters nihilism by fundamental trust in reality, which affirms reality as coherent and meaningful. He then builds his case for theism upon trust in God, which is itself the condition of the possibility of fundamental trust in reality. Although claiming an intrinsic rationality for both these acts of trust, his position is ultimately reducible to the fideistic answer to the question of God and thus not justifiable at the bar of reason. A philosophical theology, however, should employ reason in favor of the decision for God.