Adam is a Metaphor for Zedekiah?!

I had already largely agreed with Walter Mattfeld that the Bible (especially Genesis) largely reflects the Late Iron IIc/Babylonian/Early Persian periods before I founded this blog-indeed, I had argued Genesis 14 is a metaphor for Zedekiah’s escape and Chedorlaomer a metaphor for the Median or Persian empire-but this idea puts me to shame! Why had I not thought of Adam being a metaphor for Zedekiah before? Why had I not thought Eden as a metaphor for Jerusalem, just made larger-than life and moved somewhat to the East?