Final answer:
The first movement of Bach's church cantatas, known as the chorale fantasia, typically features each phrase of the melody heard in turn in an elaborate, contrapuntal setting.
Step-by-step explanation:
The movement in Johann Sebastian Bach's church cantatas where each phrase of the melody is typically heard in turn is the first movement. This first movement is usually a choral movement called chorale fantasia, where the cantata's hymn tune is presented in an elaborate, contrapuntal setting.
The tune is delivered in a staggered manner, with each line or phrase of the chorale melody introduced by one voice or section of the choir, then taken up by others in a fugal or imitative style. This creates a rich tapestry of interweaving melodies that are characteristic of Bach's sophisticated compositional style.