This was Chemnitz's context, and God was very gracious through this man, who by luxury of being a librarian, became very well read in theology and especially that of the early church fathers. God used this particualarly later on with his magnificent evidence for the two natures of Christ.
Preus has devoted much of his life to translating Chemnitz from Latin, and has left a wonderful heritage. Here, though, he departs from translation and gives us a theological biography that is rich in its scope and wordsmithing. If anyone today knows Chemnitz, it is Preus.
Chemnitz was all about sources, not about cutting down personalities in debate. The Formula of Concord was the outcome primarily due to his work of resolving theological tension. Oh, the Lutherans today would use this as our model.
Worth finding before it goes out of print, or finding a copy somewhere for your reading and library.