How has the artist used symbolic proportion when creating mary and jesus (christ) entroned?

THE final canto of Dante’s “Paradiso” opens with euphoric praise not for the Son or the Father or even the Spirit, but the Mother:

Virgin mother, daughter of your son
Humbler and higher than any other creature…
You are she who so ennobled human nature
That nature’s very maker did not disdain
To himself be made by you.

The lines are an apt expression of the manifold contradictions embodied in the Christian mythology of Mary. “Picturing Mary: Woman, Mother, Idea”, a new exhibition at the National Museum of Women in the Arts in Washington, DC, sets out to explore these contradictions and their evolution in Christian religious imagery. The show brings together more than 60 works of Renaissance and Baroque Italian art, many on view in America for the first time. 

which novel could you tell me?