Decoding of the painting “Last Supper” (1546) by Giorgio Vasari as the reflection of his nuanced view on the role of the depicted characters and modified message of the painting. Detailed connection and differences with related, and now decoded “Last Supper” by Leonardo Da Vinci. Understanding the connection of painter Giorgio Vasari with the Verrocchio/Da Vinci project (1472-1498) about the beginnings of Christianity.