Although Eberhard Jüngel would consider this work to be a "summary" of Karl Barth's doctrine of God's self-revelation, it clearly moves beyond Barth to take the argument into new areas of thought. The book excels in that it shows the value of theological language to describe those things that transcend both analytic and continental categories. Since summing up Jüngel's dense thinking in a few paragraphs would be impossible, might I instead share a final passage (and nudge to Heidegger) that was extremely insightful:
"God's self-relatedness thus springs from the becoming in which God's being is. The becoming in which God's being is is a becoming out of the word in which God says Yes to himself. But to God's affirmation of himself there corresponds the affirmation of the creature through God. In the affirmation of his creature, as it becomes event in the incarnation of God, God reiterates his self-relatedness in relation to the creature, as revealer, revelation and as revealedness. This christological relation to the creature is also a becoming in which God's being is. But in that God in Jesus Christ became man, he is as creature exposed to perishing. Is God's being in becoming, here, a being-unto-death?
The New Testament witness answers this question with the message of the death and resurrection of Jesus Christ. This message witnesses that where God's being in becoming was swallowed up in perishing, perishing was itself swallowed up in the becoming. In this it was established that God's being remains a being in becoming. In the event of the death of Jesus Christ, God remains true to himself as the triune God in his Yes to humanity. In the death of Jesus Christ, God's Yes, which constitutes all being, exposed itself to the No of nothingness. In the resurrection of Jesus Christ this Yes prevailed over the 'No' of nothingness. And in just this victory it was established through grace why there is something at all, and not rather nothing" (122-123).