Did you follow all that, all that I posted on Friday? The eyes blur over.
It's blurry, I know. The idea is that poetry is a special kind of "embodied" speech, analogous to incarnation. An end in itself, as well as a representation of something else.
& the concept of incarnation stems from a metaphysics, if you will, which includes both divine & human; not one without the other. A religious perspective which includes BOTH divine will and human self-will, human freedom. This is the general idea that underlies Renaissance christian humanism, Dante's polemic for a balance between Pope & Emperor, Roger Williams' demand for liberty of conscience and the separation of church and state.
When I look back at the poem (Stubborn Grew, etc.) I see it as expressing a position in the middle, facing 2 ways: first, by celebrating Roger Williams & echoing Dante in certain ways (the "octagonal" design described on Fri.), it represents this humanist stand for freedom of conscience & the separation of political & religious authority; second - especially in the 3rd book, July - it represents the distance between present-day dispositions of political power ("Julius" - military-state force) and a utopian future ("Jubilee").