Kant leveled the death-blow upon God: his critique of the proofs of God's existence, which had been developed and repeated by Jewish, Muslim and Christian theologians for centuries, has been bizarrely definitive, such that virtually no 'serious' philosopher in the present takes them to be even worth mentioning any longer, and even most theologians do not try to defend them (there are exceptions, like William Lane Craig and Alvin Plantinga - and the late J.N. Findlay even suggests that Kant himself was implicitly committed to the ontological proof of God's necessary existence).
Kant also saw himself as leveling a death-blow upon (dogmatic) metaphysics, but this was immediately revived in new form by all his most important follows. It takes an absurd amount of distortion and conceptual gymnastics to make it appear that Hegel, Nietzsche and Marx were not dogmatic metaphysicians. They were, and, moreover, each simply took up a single member of the trinity's corpse (killed by Kant's death blow) and turned it into a new kind of temporalized God, whose 'mind' is a series of historical stages through which humanity must pass on its way to the kingdom of heaven (communism, the uebermensch, absolute knowing). For Hegel it was the logos (christ), for Marx it was matter (the spirit) and for Nietzsche, it was will (the father). Each was able to articulate with greater clarity a single aspect of the Christian Kingdom of Heaven, but each of these approaches to history, ethics and politics, in isolation, leads to disaster. Each is a myopic view of a dead member of a divine corpse - how could this not pale in comparison to the three members alive, united, and whirling around in their cosmic dance?
Perichoresis is a resurrection of God - the very same resurrection that Christ himself prophesied before he was crucified - in the form of a unified logic of idealism, materialism and voluntarism (Hegel, Marx, Nietzsche) under the aegis of the true heir of Christianity, the transcendental philosopher who remained connected to the spirit of joy that for some reason the Europeans have never been able to preserve: Emerson, along with American Transcendentalism as a whole.
As Emerson understood, Perichoresis cannot be carried out by philosophy alone. The thesis is simply unavoidable - God the father is music, Christ the logos is philosophy, and Mary the holy spirit is drama. Thus Perichoresis must exist as a unified musical-philosophical-dramatic practice, simultaneously engaging the style and themes currently being generated under the Armistice of Varizen and problematizing or intervening within the infrastructures upon which these styles depend.