What is the spear that pierced Jesus' side called?
Holy Lance
The Holy Lance, also known as the Lance of Longinus (named after Saint Longinus), the Spear of Destiny, or the Holy Spear, according to the Gospel of John, is the lance that pierced the side of Jesus as he hung on the cross.
Sacred Relic of Saint George
The sacred relic of Saint George was one of the most famous of relics, after the True Cross and Holy Lance, and was the arm of the Saint George (d. 303), ordered killed by the Roman Emperor Diocletian for his failure to renounce his faith in Christ. George, a secondary patron saint of the First Crusade, played a significant role and provided other relics, as the occupation of his tomb at Lydda (now Lod, Israel) marked the first Latin bishop of Israel as well as a service to ask for his intervention. The arm was given to the abbey of Anchin by Robert of Jerusalem (Robert II of Flanders) at some time during the Jerusalem campaign.