Luther: On the Writing of Commentaries
It is right and good that one to whom this grace has been given should apply himself in all earnestness to the Scriptures, to search and to seek, and [then] whatever good things God suggests to him, he should share with others through books, and thereby help to explain the Scriptures and to improve the church according to the rule in 1 Corinthians 14 [:4–5]. For everything is to be done for the improvement of the church, that is, for the glory of God.*
And that is exactly what these volumes strive to do.
*Martin Luther, “Preface to Wenceslaus Linck, Annotations to the Five Books of Moses: 1543.”