Why are more chapters now in poetic format? Many parts of the Bible were originally written as poetry. In modern languages, poetry is often distinguished by rhyme, whereas in Hebrew poetry, the most important formal elements are parallelism and contrast.
Viens piemērs ir Jesajas grāmatas 24. nodaļas 2. pants, kur katra rindiņa satur pretstatu un katra nākamā rindiņa attīsta iepriekšējā rindiņā ietverto domu, lai uzsvērtu, ka neviens neizbēgs no Dieva soda.