▁cant at as ▁B W V ▁ 2 1 3 , ▁ 2 1 4 ▁and ▁ 2 1 5 , ▁given ▁that ▁the ▁original ▁works ▁were ▁written ▁fairly ▁close ▁to ▁the ▁or atorio ▁and ▁the ▁se am less ▁way ▁with ▁which ▁the ▁new ▁words ▁fit ▁the ▁existing ▁music . ▁ ▁Nevertheless , ▁on ▁two ▁occasions ▁Bach ▁abandoned ▁the ▁original ▁plan ▁and ▁was ▁comp elled ▁to ▁write ▁new ▁music ▁for ▁the ▁Christmas ▁Or atorio . ▁The ▁alto ▁aria ▁in ▁Part ▁III , ▁" Sch lie ße , ▁me in ▁Her ze " ▁was ▁originally ▁to ▁have ▁been ▁set ▁to ▁the ▁music ▁for ▁the ▁aria ▁" D urch ▁die ▁von ▁E ifer ▁ent fl amm ten ▁W affen " ▁from ▁B W V ▁ 2 1 5 . ▁On ▁this ▁occasion , ▁however , ▁the ▁par ody ▁technique ▁proved ▁to ▁be ▁un success ful ▁and ▁Bach ▁composed ▁the ▁aria ▁af resh . ▁Instead , ▁he ▁used ▁the ▁model ▁from ▁B W V ▁ 2 1 5 ▁for ▁the ▁bass ▁aria ▁" Er le ucht ' ▁auch ▁me ine ▁fin stre ▁S innen " ▁in ▁Part ▁V . ▁Similarly , ▁the ▁opening ▁ch orus ▁to ▁Part ▁V , ▁" E hre ▁sei ▁dir ▁Gott !" ▁was ▁almost ▁certainly ▁intended ▁to ▁be ▁set ▁to ▁the ▁music ▁of ▁the ▁ch orus ▁" L ust ▁der ▁V ölker , ▁L ust ▁der ▁De inen " ▁from ▁B W V ▁ 2 1 3 , ▁given ▁the ▁close ▁correspond ence ▁between ▁the ▁texts ▁of ▁the ▁two ▁pieces . ▁The