▁" let ▁freedom ▁ring ". ▁ ▁King ▁also ▁is ▁said ▁to ▁have ▁used ▁port ions ▁of ▁Pr ath ia ▁Hall ' s ▁speech ▁at ▁the ▁site ▁of ▁a ▁burn ed - down ▁African ▁American ▁church ▁in ▁Ter rell ▁County , ▁Georgia , ▁in ▁September ▁ 1 9 6 2 , ▁in ▁which ▁she ▁used ▁the ▁repeated ▁phrase ▁" I ▁have ▁a ▁dream ". ▁The ▁church ▁burn ed ▁down ▁after ▁it ▁was ▁used ▁for ▁vot er ▁registration ▁meet ings . ▁ ▁The ▁speech ▁also ▁all udes ▁to ▁ ▁in ▁the ▁second ▁st anza ▁of ▁the ▁speech . ▁Additionally , ▁King ▁quotes ▁from ▁ ▁(" I ▁have ▁a ▁dream ▁that ▁every ▁valley ▁shall ▁be ▁ex alt ed ▁... ") ▁and ▁Am os ▁ 5 : 2 4 ▁(" But ▁let ▁justice ▁roll ▁down ▁like ▁water ▁... "). ▁He ▁also ▁all udes ▁to ▁the ▁opening ▁lines ▁of ▁Shakespeare ' s ▁Richard ▁III ▁(" Now ▁is ▁the ▁winter ▁of ▁our ▁dis content ▁/ ▁Made ▁gl orious ▁summer ▁... ") ▁when ▁he ▁remarks ▁that ▁" this ▁sw elter ing ▁summer ▁of ▁the ▁Neg ro ' s ▁legit imate ▁dis content ▁will ▁not ▁pass ▁until ▁there ▁is ▁an ▁inv ig or ating ▁aut umn ▁... " ▁ ▁Rh et or ic ▁ ▁The ▁" I ▁Have ▁a ▁Dream " ▁speech ▁can ▁be ▁disse cted ▁by ▁using ▁three ▁r het or ical ▁l enses : ▁voice ▁mer ging , ▁proph etic ▁voice , ▁and ▁dynamic ▁spect acle . ▁Vo ice ▁mer ging ▁is ▁the ▁combining ▁of ▁one ' s ▁own