The Last Supper was painted in the mid 1490’s. It was not uncommon to place characters of Bible stories in contemporary settings. There is a famous work that depicts Mary holding the baby Jesus sitting next to the Holy Roman Emperor. The people at the time knew the works were not historically accurate. Very few people were literate and the art of the time, such as oil paintings and stain glass windows, illustrate the people and events of the Bible. It took Michelangelo five years to paint the 343 figures on the ceiling of the Sistine Chapel. There is value to studying Medieval art just keep in mind that’s it’s only around 500 years old and depicts events from 2,000 years ago. Di Vinci and Michelangelo are closer to our time than the first century A.D.