▁voice ▁with ▁religious ▁prede cess ors . ▁Pro ph etic ▁voice ▁is ▁using ▁r het or ic ▁to ▁speak ▁for ▁a ▁population . ▁A ▁dynamic ▁spect acle ▁has ▁orig ins ▁from ▁the ▁Arist ot elian ▁definition ▁as ▁" a ▁weak ▁hy brid ▁form ▁of ▁drama , ▁a ▁the atr ical ▁con co ction ▁that ▁re lied ▁upon ▁external ▁factors ▁( sh ock , ▁sens ation , ▁and ▁passion ate ▁release ) ▁such ▁as ▁tele vised ▁rit uals ▁of ▁conflict ▁and ▁social ▁control ." ▁ ▁Vo ice ▁mer ging ▁is ▁a ▁common ▁technique ▁used ▁amongst ▁African ▁American ▁pre ach ers . ▁It ▁comb ines ▁the ▁voices ▁of ▁previous ▁pre ach ers ▁and ▁ex cer pts ▁from ▁script ures ▁along ▁with ▁their ▁own ▁unique ▁thoughts ▁to ▁create ▁a ▁unique ▁voice . ▁King ▁uses ▁voice ▁mer ging ▁in ▁his ▁per oration ▁when ▁he ▁references ▁the ▁sec ular ▁h ymn ▁" America ." ▁ ▁The ▁r het or ic ▁of ▁King ' s ▁speech ▁can ▁be ▁compared ▁to ▁the ▁r het or ic ▁of ▁Old ▁Testament ▁proph ets . ▁During ▁King ' s ▁speech , ▁he ▁speak s ▁with ▁ur gency ▁and ▁crisis ▁giving ▁him ▁a ▁proph etic ▁voice . ▁The ▁proph etic ▁voice ▁must ▁" rest ore ▁a ▁sense ▁of ▁duty ▁and ▁virtue ▁amid st ▁the ▁decay ▁of ▁ven ality ." ▁An ▁evident ▁example ▁is ▁when ▁King ▁decl ares ▁that , ▁" now ▁is ▁the ▁time ▁to ▁make ▁justice ▁a ▁reality ▁for ▁all ▁of ▁God ' s ▁children ." ▁ ▁Why ▁King ' s ▁speech ▁was