 Bach structured the cantata in six movements , beginning with a biblical quotation for the vox Christi , Jesus speaking . An aria is followed by a chorale for the soprano , a set of recitative and aria , and the closing chorale , the only movement for choir . Bach scored the work for three vocal soloists ( alto , tenor , bass ) , a four @-@ part choir and a Baroque instrumental ensemble of two oboes d 'amore ( Oa ) , two violins ( Vl ) , viola ( Va ) and basso continuo . 
