Any imagery found in a Bible would be a feature of the particular publisher of a Bible [to include them or not]. You can find both kinds of Bibles.
Some might include "maps" of the Middle East region, anciently, modern day or sometimes, both. Some might include famous illustrations and/or paintings of the Renaissance artists... whose imagery has come to be accepted today as "the way people and things looked in the days of biblical account."
For example; the way Jesus supposedly looked: tall, thin, effeminate, beard, long shoulder-length hair, sickly expression on his face, and always carrying a lamb. Not to mention the "halos" that followed Jesus and all the saints around, hovering above their heads.
If you found a Bible with images of "monks and nuns" in it... it was the choice of its publisher to include them -- [unless someone was just doodling on the pages].
Monks of the middle ages copied books by had, and in this way produced manuscript copies. This was the only way books were published at the time, and it was nearly always done by monks. The book they copied most was the Bible, but they did other works as well, and most surviving medieval literature was copied by monks at one time or another.
Monks in local monasteries
scriptorium is from latin, means a room where writing is done. in ancient times there was no automatized book printing so all books were copied bu hand by monks in scriptoriums
Monks hand printed the Bible until Gutenberg invited the printing press in 1450. The first book he printed was the Bible.
Many different scribes; but they all generally copied portions of the Bible and not the whole lot.
Monks copied books by hand because printing technology was not yet available during their time. By copying books, they were able to preserve and spread knowledge, particularly religious texts. This painstaking process also allowed monks to meditate on the content they were copying, serving a dual purpose of study and devotion.
The Gutenberg Bible was printed in the 15th Century, but there were books before that, which had been copied by hand.
Monks studied religious works and wrote copies of the Bible in buildings called scriptoriums. These were typically found within monastery complexes, providing a quiet and focused environment for the monks to transcribe and illuminate manuscripts by hand.
At one time Bibles were copied by hand. Monks became experts in calligraphy. The Book of Kells gives an example of excellent calligraphy. People enjoy looking at it for its artwork.
Monks began copying books during the Dark Ages. During this time barbarians were sweeping over Europe destroying and pillaging everything in their paths, including libraries. At this time also people were too busy repairing the damage done by barbarians to study much. So the monks copied these books to preserve learning.
Copied Down all of the books in the monastery library. All of this needed to be done by hand. The first letter on each page is often decorated and contains man pictures
This was known as the scriptorium.In this room monks would hand copy books - especially Bibles - before the days of printing. Therefore, in the middle ages Bibles were extremely expensive. They were so expensive that the large Bibles that were kept on the lecterns in churches were often padlocked there to prevent theft.Sometimes in a scriptorium highly trained monks would copy the bible for several hours every day. Occasionally in monasteries the scriptoria would hold many dozens of monks copying page after page on an 'assembly line' as in a factory. As each page was copied it would be checked and double checked and then passed on to the 'illuminator' who would decorate the page with real gold leaf illustrations. Finally, when all the pages were assembled in order, the book would be bound. In those days, therefore, the production of books was a labour-intensive activity, and extortionately expensive,