The chief device of ancient Hebrew Biblical poetry, including many of the psalm, was parallelism, a rhetorical structure in which successive lines reflected each other in grammatical structure, sound structure notional content, or all three. Parallelism lend itself to antiphonal or call-and-response performance which could also be reinforced by intonation Thus, Biblical poetry relies much less on metrical feet to create rhythm based or much larger sound units of lines, phrases and sentence