The text for the Ascension Oratorio, a compilation of several biblical sources, free poetry and chorales, was presumably written by Picander who may also have worked on the libretto for the Christmas Oratorio.
ðə tˈɛkst fɚðɪ ɐsˈɛnʃən ˌɔːɹətˈoːɹɪˌoʊ, ɐ kˌɑːmpɪlˈeɪʃən ʌv sˈɛvɹəl bˈɪblɪkəl sˈoːɹsᵻz, fɹˈiː pˈoʊɪtɹi ænd kˈoːɹeɪlz, wʌz pɹɪzˈuːməbli ɹˈɪʔn̩ baɪ pˈɪkændɚ hˌuː mˈeɪ ˈɔːlsoʊ hæv wˈɜːkt ɔnðə lɪbɹˈɛɾoʊ fɚðə kɹˈɪsməs ˌɔːɹətˈoːɹɪˌoʊ.