Barth's son wrote an Old Testament introduction/theology

How bizarre. This should be exquisitely interesting to me as a major thesis of mine is that Childs' canonical approach cannot be understood without a theology of something like Karl Barth's "three times of the word" (Das Wort Gottes in seiner dreifachen Gestalt).

Interestingly, the book was originally written in Indonesian, where Christoph Barth was working as a missionary. It is apparently still the standard work there and reflects the concerns of this struggling minority.

According to reviews, it bears many similarities to von Rad's Old Testament Theology. I wonder what his father would have thought? I'm reminded of one of Brevard Childs' anecdotes about visiting a lecture by von Rad where Karl Barth was sat near to him:

There was always a sort of tension, even in those years, between those studying the Bible and Barth. I remember one incident in 1952 when Gerhard von Rad gave a lecture in Basel on the "Typological Exegesis of the Old Testament". I happened to be sitting rather near to Barth, and I was interested in his reaction. For me von Rad's lecture was simply glorious, crystal clear and exciting. When he finished, Barth turned around in a half sleepy way to the person next to him and said: "I don't quite get it". This seemed to me an appalling response, and I felt like saying, "Herr Prof., let me explain it all to you". Fortunately, I restrained the impulse. Yet in the years that have passed, and the more I have studied von Rad's lecture, the more I began to understand why Barth found problems, and why it wasn't as clear as I once had thought" (lecture at Yale, 1969).

You can read large portions of the book on Google Books.