I’m no expert on Barth. I have, however, read Luther and Calvin on the Lord’s Prayer. This book was a nice little survey of their thought set in a devotional tone. It’s actually the translation of an adaptation of three lectures Barth gave at Neuchâtel.
This is the sort of book that packs a lot of meaning into a few words. Don’t let its 78 pages fool you into thinking it’s a lightweight. The words of the translation (by Sara F. Terrien) are carefully weighed and full of beauty.
Take this little book on your next paddling trip and meditate on the Lord’s prayer as you go.
Barth, Karl. Prayer. Westminster Press, 1952.
Found this book, hope to read it soon.