▁performed ▁on ▁. ▁ ▁Pre ise ▁de in ▁Gl ücke , ▁ges eg net es ▁Sachsen , ▁B W V   2 1 5 , ▁performed ▁on ▁. ▁ ▁Mov ements ▁from ▁the ▁B W V   2 1 3 , ▁ 2 1 4 ▁and ▁ 2 1 5 ▁cant at as ▁form ▁the ▁basis ▁of ▁several ▁movements ▁of ▁the ▁Christmas ▁Or atorio . ▁In ▁addition ▁to ▁these ▁sources , ▁the ▁sixth ▁cant ata ▁is ▁based ▁on ▁a ▁largely ▁lost ▁church ▁cant ata , ▁B W V   2 4 8 a , ▁of ▁which ▁at ▁least ▁the ▁opening ▁ch orus ▁is ▁based ▁on ▁the ▁lost ▁sec ular ▁cant ata ▁B W V   1 1 6 0 . ▁The ▁tri o ▁aria ▁in ▁Part   V ▁" A ch , ▁wenn ▁wird ▁die ▁Zeit ▁ers che inen ?" ▁is ▁believed ▁to ▁be ▁from ▁a ▁similarly ▁lost ▁source , ▁and ▁the ▁ch orus ▁from ▁the ▁same ▁section ▁" W o ▁ist ▁der ▁ne uge bor ne ▁König " ▁is ▁from ▁the ▁ 1 7 3 1 ▁St ▁Mark ▁Pass ion , ▁B W V ▁ 2 4 7 . ▁ ▁Chor ales ▁ ▁Like ▁for ▁most ▁of ▁his ▁German - language ▁church ▁music , ▁Bach ▁used ▁Luther an ▁h ym ns , ▁and ▁their ▁Luther an ▁ch or ale ▁t unes , ▁in ▁his ▁Christmas ▁Or atorio . ▁The ▁first ▁ch or ale ▁t une ▁appears ▁in ▁the ▁ 5 th ▁movement ▁of ▁Part   I : ▁it ▁is ▁the ▁t une