Why does Bach include chorale melodies that are easy to sing in Cantata 140 Awake a Voice Calls to Us?

Bach includes easily singable chorale melodies in Cantata 140, "Awake a Voice Calls to Us," to facilitate congregational participation and enhance communal worship. The simplicity of these melodies allows worshippers to engage more fully with the music, fostering a sense of unity and collective expression of faith. Additionally, these familiar tunes serve to reinforce the theological themes of the cantata, making the message more accessible and impactful for the congregation.