Particularly notable among his scholarship is his lengthy and comprehensive commentary on the Book of Genesis, especially the volume covering Genesis 1-11.
(For the record, even in the finest art schools, teachers are not known for their lengthy commentary on student efforts.)
Each drawing is accompanied by a lengthy commentary and catalogue details.
He also wrote lengthy commentary for The Christian Family's Bible (1763-77, 3 volumes).
Covarrubias said in a lengthy commentary which we extract a few paragraphs:
In a lengthy commentary on the Board's proposal, Douglas-Smith wrote to Jacques:
He made short (and useful) summaries of the lengthy biblical commentaries of Hrabanus Maurus.
However, it is known that Wang Kai had a large collection of rare books at home, and that he himself had written lengthy commentaries.
But through most of a lengthy commentary on the matter, he sounded downright diplomatic.
While Isaac's work is fairly short, most editions contain lengthy commentaries.