The Incarnation of God also, focuses attention on two central issues of modern theology: the historical side of God and the historical humanity of Jesus. Here are not only the classical themes of traditional christology but also the wider horizons of contemporary discussion, from the dialogue with atheism and the 'God-is-dead' theologies to political theology and theologies of the future. Unfettered by dogmatic prejudices and with the greatest respect for historical teachings, Kung subjects the classical axioms of God's unchangeableness and immunity from suffering as well as the Chalcedonian model of two-nature christology to a constructive criticism, which reveals the living, historical side of God's being and the profoundly human historical nature and significance of Jesus Christ. The Incarnation of God is an indispensable prolegomena for every future christology.