Further Notes:
Z. Philip Ambrose has published (German publisher) his translations of many of the Back Cantatas. The complete translations are at the website posted previously. I have found no others on line.
His first line to 147 5(S) is as I have noted:
Make ready, O Jesus, to thee now the way.
He attempted to keep to the meter rather than making idiomatic translations. They read poorly.

Bach made changes to 147, 5 (S) for solo soprano:
From Beziehe de Höhle des Herzens, to- Mein Heiland, erwähle die glaübige Seele.

The book by Eric Chafe, "Analyzing Bach Cantatas," is available in paperback for $29.95 (0195161823). Good reviews.