What you will see on these JPG files is:
The lead-in recitative (9d) which is marked:
Evangelista/Tenore with Continuo/Organo (consisting of 3 measures) beginning/ending with the words: “Und sie wurden sehr betrübt….und sagten zu ihm:”
The following movement (9e) with the words “Herr, bin ich’s?” is scored for 4 voices and has in addition parts for Violin 1 & 2, Viola and a continuo group marked ‘Continuo/Organo’
Other markings such as “I”, “Chorus,” “Allegro” are sometimes completely missing or inconsistently used/marked.