This is Nativity (1790) by Vladimir Borovikovsky (1757 -1825).
Borovikovsky was a Russian non-professional painter of Ukranian origin. During the travel of Empress Catherine the Great he was commissioned two allegoric painting to decorate her rooms. Empress loved those paintings so much that convinced Borovikovsky to move to Saint Petersburg. The artist was too old to attend the Emperial Aademy of Arts so instead he took private lessons from Dmitry Levitzky, probably the most famous portraitist of the time. Borovikovsky also became a popular portrait painter and created about 500 portraits during his lifetime, 400 of which survived to the 21st century.
Here you can see a classic depiction of a typical Biblical subject - the Nativity. Angels gather together around Mary and baby Christ to look at them. I hope any explanation is needless here. I chose this picture for today since today is Christmas. Enjoy your holidays and keep loving art.
Merry Christmas to all.