The Most Reverend Bishop Frederick Justus Knecht, D.D., was the late auxiliary bishop of Freiburg in the early 1900s. His massive work, A Practical Commentary on Holy Scripture, was published in 1923 by the Publisher to the Holy Apostolic See. A considerable number of bishops and archbishops thoroughly enjoyed and recommended the book, calling it "admirable" and "excellent". It was originally titled A Practical Commentary on Holy Scripture for the Use of Those Who Teach Bible History, and was given the Imprimatur by Doctor Mutz, Vicar General, in 1923