It would be a great victory for Christian apologetics if the words "God" and "existence" were very definitely separated except in the paradox of God becoming manifest under the conditions of existence, that is, in the Christological paradox. God does not exist. He is being-itself beyond essence and existence. Therefore, to argue that God exists is to deny him.The last part of this famous quote is often used to discredit Tillich and make him out to be some kind of radical ultra liberal blasphemer. What Tillich is actually trying to do here is to describe God in a way that later will make the talk of Incarnation understandable. To appreciate the mystery of the Incarnation one has to understand in what way God is fundamentally different from creation. In Tillich's terms this difference consists of the fact that God is beyond essence and existence, that is things as the "should" be and things as they are. When he says that God does not exist, his point is that we cannot reach God by adding things to the finite. That way we will only end up with Idols. as he says later on: concerning God all superlatives are diminutives.
Systematic Theology I, 205.
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