All four canonical Gospels describe Jesus sharing a final meal with his disciples on the night before his arrest and crucifixion. In the Synoptic Gospels, Matthew, Mark and Luke, this meal is presented as a Passover seder, and during it Jesus takes bread, blesses and breaks it, identifying it with his body, and takes a cup of wine, identifying it with his blood of the covenant, poured out for many, instructing his disciples to do this in remembrance of him. John's Gospel, while also describing a final meal on the same night, does not include this bread and wine institution narrative, focusing instead on an extended set of teachings and Jesus washing his disciples' feet, an act of humble service John presents at length in its place.
The meal also includes, across the Synoptic accounts, Jesus predicting that one of those present would betray him, later identified as Judas Iscariot, and predicting that Peter would deny knowing him three times before the following dawn, both predictions the Gospel narratives go on to describe as fulfilled in the hours that follow.
The Last Supper is understood across the great majority of Christian traditions as the scriptural origin of the Eucharist, also called Holy Communion or the Lord's Supper depending on the tradition, one of the most widely observed sacraments in Christian practice.