Complex sentence: It is not known whether Bach knew Lehms personally; he may have known his work from the 1711 publication', which includes this text and that of another solo cantata, "Widerstehe doch der Sünde", BWV 54, performed the month before.
Split into simpler sentences: It is not known whether Bach knew Lehms personally; he may have known his work from the 1711 publication'. The same author had written the text for "Widerstehe doch der Sünde", BWV 54, performed the month before.