Why do theologians write so much? I’m going to take the case of Rudolf Bultmann because the problem is particularly acute with him, but it applies to most, including Karl Barth. Barth’s Church Dogmatics alone is over six million words. Together they are the most influential Protestant theologians of the 20th century.
They write so much because they are writing about what cannot be spoken, or written. The kerygma (κήρυγμα), which means message or proclamation, refers in general to the gospels, and in Bultmann’s work to the decision to follow the message of Advent, that Christ is risen and we must choose to believe and act accordingly.
Trouble is, the kerygma is prelinguistic.
As counterintuitive as it may initially appear, the logical conclusion is that the kerygma is essentially prelinguistic. (Congdon, p 74)
This doesn’t make words irrelevant, but it sets their limit. If “the purpose of theology is to bring to speech the actual event in which one encounters the living God,” then Bultmann’s project is impossible.
Bultmann forgets about Christ. 
God is the one who remembers. Everything. Everyone, every being, is remembered by God. A God who understands human weakness, but also a God who judges each of us. Everything you or I do matters, because it will be remembered by God. Those who made the Holocaust possible will be remembered by God. My Grandson, who contributes a large portion of his small salary to charity will be remembered. Remembered and judged by God. For all eternity. But that’s it. God does not punish the bad or reward the good. In the end we return to the stardust from which we came. But God knows. Forever. Kind acts and cruel acts are not the same. God knows the difference and remembers, even when humans have forgotten. Everything you do is of eternal significance. 
A Christmas message, or does it matter if the Bible is myth? Ask Rudolf Bultmann.