Everyone knows the painting depicts Jesus' last meal with his apostles before he was captured and crucified. But more specifically, da Vinci wanted to capture the instant just after Jesus reveals that one of his friends will betray him, complete with reactions of shock and rage from the apostles. In da Vinci's interpretation, the moment also takes place just before the birth of the Eucharist, with Jesus reaching for the bread and a glass of wine that would be the key symbols of this Christian sacrament.