From this analogy Bloesch affirms that "both Scripture and the church share in the infallibility of the incarnate and living Christ" (148). He goes out to point out that Luther believe that a church founded on the Word of God could not err, because the Word that it teaches does not err. I wish that Bloesch would have written more about the church being "infallible" (as he describes Scripture in previous chapters). Given his understanding of infallibility, I'm guessing he means that the church is unable to err in terms of its communication and witness to Christ, specifically relative to salvation. This seems to be affirmed in a lengthy quote by Barth.
This idea of the church being infallible because Scripture "is in the hands, but not the power of the church" (Barth, 147), is interesting. it is not a concept I had thought of previously. Nevertheless, it makes sense. Further, given its status as the "bride of Christ," the Holy Spirit is present and interpreting the text for the church. I think there is more here, but I have to think a bit more - interesting for sure.