An anti-Catholic painting by renowned heretic Leonardo da Vinci.
The imagery de-emphasizes the the bread and wine, while strongly emphasizing the role of Mary in the Christian religion. Mary (?) also is literally holding a knife to Saint Peter, founder of the Roman Church.
“Cripes!” says Peter with his hands up. “Da dame’s got a shiv!”

Mary with the Bowie Knife in the Bread Basket:
priory of sion