According to the Bible, after the Last Supper, Christ and the apostles (without Judas) went to the Mount of Olives, from where they went to a nearby place, described in the Gospels of Saint Matthew and Saint Mark as Gethsemane and in the Gospel of Saint John as a garden.
Here Christ went aside with Peter, James and John, whom he asked to keep watch with him while he awaited the soldiers who would arrest him.
He then prayed to his Father that 'the cup should pass from me', i.e. that he should not have to undergo the Crucifixion, but finally he declared himself willing to submit to his Father's will. The three apostles were then discovered to be asleep (Mark 14: 32-40).
In Bellini's painting of 'The Agony in the Garden', a cup is presented to Christ by angels as though in a vision.