The insertion of Christianity into the text was unnecessary, and lost something with its addition. As far as securing his thesis he relied too heavily on one author. There was much research done in preparation for writing this text, but it missed the mark.
Kugel wrote two books in one: 1) The primary feature of parallelism in Hebrew literature is seconding and 2) there is no such thing as Hebrew poetry. He should have left out the second goal and the book would have been MUCH better.
I enjoyed this book much more than I was expecting to. While Alter's book on biblical poetry has some important criticism of Kugel, reading Kugel was far more enlightening to me.
Kugel has correctly discerned the essence of parallelism as a progression from A to B in a "what is more" fashion, instead of focusing on rhyme or meter. He then gives us a thorough historical roadmap of the journey to understand biblical poetics, including a lot of blind alleys, as well as real advances.
The payoff for me comes as this book relates to preaching poetic passages, and especially in making informed liturgical judgments about psalm-singing; i.e., in that I have greater sympathy for those who point out the shortcomings of metrical psalmody.
Oh, and a moment of near-Wodehousian glory: "For O'Connor has strung his net far too tightly to snag only poetic mackeral while letting prosaic minnows swim free." 319
This book about the nature of poetry in the Bible was technically way beyond me. Yet Kugel writes so clearly that I got something out of the book nevertheless. I have much clearer understanding of what "parallelism" is and what it is not, in the Bible, despite the fact that a lot of nuances in his study went right over my head.