I wonder if anyone can share any thoughts on the conclusion of this 1949 poem. There is no need to reproduce it all, the preceding five stanzas all convey unambiguous images of absolution and forgiveness, but the final stanza is as follows:

"Flower of the violated grass, voice of the lost grove,
Unheard, unheeded eloquence of wronged things,
Thunder that rends the self-accusing soul,
Voice of those bleeding silent wounds ourselves have given
Sole divine judgment on the murderous heart,
Forgiveness, too terrible to be born!"

I'm particularly concerned with the last three lines, from "Voice of..." where the lack of punctuation leaves me wondering who or what is being addressed. And by what is too terrible to be born. Surely this can't refer to forgiveness its self?