Auf Christi Himmelfahrt allein (On Christ's ascension into heaven alone),[1] BWV 128,[a] is a church cantata by Johann Sebastian Bach.

He will lift me to his right hand, according to Matthew 25:33, and judge me right, according to the closing chorale, the fourth stanza of Matthäus Avenarius' "O Jesu, meine Lust".

For example, an aria and recitative are combined to one movement by inserting "wo mein Erlöser lebt" (where my redeemer lives)[1] as a connection.

[2] The original manuscript of the cantata was accepted in lieu of inheritance tax by British Government from the estate of Ralph Kohn and allocated to the Bodleian Library in 2024.

[7] In the opening chorus the chorale on the melody of the German Gloria "Allein Gott in der Höh sei Ehr" by Nikolaus Decius is embedded in an orchestral concerto.

Bach derived the highly figurative motifs of the instruments from the chorale tune: both a signal played first by the strings and oboes, then the two horns, then a fugue subject.