A girl died young and her parents (in black, above the girl) donated the painting to the church. The jewellery worn by the girl suggested the family is well off.
This is called an icon. Donors employed artists to draw them. There had been a not very hygienic habit of kissing these icons.
Donors employing artists for paintings and murals was also a practice of Buddhists along the silk Road; see www.flickr.com/photos/h_sinica/16365183649/in/album-72157... ( https://www.flickr.com/photos/h_sinica/16365183649/in/album-72157650791096176/ )