Jesus is living under threat--and not just from external enemies. In a Passover meal with his closest disciples, Jesus tells them that one of them is going to betray him.
Then he takes bread, blesses it, breaks it, and gives it to them, saying "This is my body." He takes a cup, gives thanks, and gives it to them, saying, "This is my blood of the covenant, which is poured out for many." We continue to remember this supper as disciples continue to gather.