It is sometimes claimed that Genesis 1 is poetry. To be sure, it reminds one of poetry in some ways, but it lacks the tightly controlled prosodic parallelisms characteristic of verse elsewhere in the Bible.
A text like Genesis 1 does not neatly fit into the dichotomy just presented. Its rhythmic-verbal propensities shine in verse 27, and a plethora of verbs characterizes the direct discourse contained within it, but the chapter’s frequent use of noun groups and hypotaxis militates in favor of a hybrid classification.
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 For further details about narrative prose styles, see Frank Polak, “Linguistic and Stylistic Aspects of Epic Formulae in Ancient Semitic Poetry and Biblical Narrative,” in Biblical Hebrew in Its Northwest Semitic Setting: Typological and Historical Perspectives (ed. Steven E. Fassberg and Avi Hurvitz; Publication of the Institute for Advanced Studies, the Hebrew University of Jerusalem 1; Winona Lake: Eisenbrauns; Jerusalem: Magnes, 2006) 285-304; 300-301; and bibliographical references there.