In 2007 Jason DeRouchie wrote a literary and linguistic critique of D. L. Christensen’s view that Deuteronomy is didactic poetry, as proffered in his revised 2001-02 two-volume Word Biblical Commentary. In this study, DeRouchie describes both the literary and linguistic features that distinguish Hebrew poetry from prose and decisively argues that Deuteronomy’s overarching genre is artistic didactic prose and not didactic poetry.
Read the paper here: Deuteronomy as Didactic Poetry.