Introduction On Thursday of Holy Week four events are commemorated: the washing of the disciples’ feet, the institution of the Sacrament of the Holy Eucharist at the Last Supper, the agony in the garden of Gethsemane, and the betrayal of Christ by Judas. Commemorations of Holy Thursday The Institution of the Eucharist At the Mystical Supper in the Upper Room Jesus gave a radically new meaning to the food and drink of the sacred meal.