The tracks below with the featured section indicated have that part louder and in the right channel; all other voice parts are quieter and in the left channel. The organ and soloist line is heard equally in both channels.
This file has only the chorus entrances, not the whole movement. There is a silence between each of the chorus entrances.
The first entrance is Measures 1 – 13 (then a short silence.) This is on Page 2 and the top of Page 3 in your score.
The second entrance starts at Measure 24, three measures before the chorus entrance at Measure 27 & 28, and ends at Measure 35 (then a short silence). This is on the bottom of Page 3 and the top of Page 4 in your score.
The third entrance starts at Measure 59 and goes to the end of the movement. This is on Pages 5 & 6 in your score.