The ‘Kritisch-exegetischer Kommentar über das Neue Testament’, formerly called ‘The Meyer’, was established more than 180 year ago. As the KEK is the oldest commentary series in German (and not only in German) still existing today, it is an important subject of research and the analysis of the development of the series reveals many significant insights in the history of New Testament scholarship in the last two centuries. Last but not least, recent investigations shed light on the relations between the German and the English-speaking scholarship in the nineteenth and twentieth centuries.