The Holy Grail, also called the Holy Chalice, is the cup Jesus supposedly used at the Last Supper, which he had with his disciples before he was crucified. According to the Hebrew Bible, “Then he took a cup, and when he had given thanks, he gave it to them [the disciples], saying, ‘Drink from it, all of you. This is my blood of the covenant, which is poured out for many for the forgiveness of sins.'” Matthew 26:27-28.
It’s not clear what happened to the cup after the Last Supper, In fact scholars are not certain if the Last Supper even occurred. In medieval literature, King Arthur and his knights embark on a quest to search for the Holy Grail, which is said in Arthurian stories to have magical properties. Another medieval legend suggests that Joseph of Arimathea, the man who took responsibility for burying Jesus, traveled to Britain and brought the Holy Grail with him.
While these are popular and fascinating legends, scholars generally regard the stories as fictional. Scholars cannot even be certain whether the Last Supper actually occurred and if the Holy Grail ever existed. Even if the Holy Grail did exist it’s unlikely that it will ever be found.