The Sinai Tables

Today in scripture we witness God himself writing the law - does He actually do the writing or does Moses?  What kind of question is this?  Moses is told to ascend to the top of Mount Sinai so that God may write on the stone tables:

"...and I will write upon these tables the words that were in the first tables, which thou brakest."  (Exodus 34:1)

And this is the Sinai Covenant from whence we have the Decalogue.  Scripture says God himself will do the writing.  What a bewildering swirl of action going on here!  The Book of Exodus states that there was a prior set of tables of stone bearing commandments, "written with the finger of God" (Exodus 31:18).  Moses broke these tables - on descending from Mount Horeb.  On purpose.  Why?

How does God communicate with us?  The written word in scripture is one of the principal means.

This is also an interesting text because it would appear to be some kind of evidence relating to the nature of the inspiration and validity of Holy Scripture.  Contrast these statements in which God is literally writing in the stone to the so-called "plenary inspiration" view of scripture; that is, God breathed through the very being of the human person who was writing.  Personally the labyrinths and mirrors of Borges and Escher come to mind - but these seem simplistic and one dimensional when compared to the book of Exodus.

I am left with an overwhelming sense of how complex God's interactions are with his humanity.