Holy Lance
The Holy Lance in Vienna is displayed in the Imperial Treasury or "Weltliche Schatzkammer" (lit. Worldly Treasure Room) at the Hofburg Palace in Vienna, Austria. It is a typical winged lance of the Carolingian dynasty. At different times, it was said to be the lance of Saint Maurice or that of Constantine the Great. In the tenth century, the Holy Roman Emperors came into possession of the lance, according to sources from the time of Otto I (912–973). In 1000, Otto III gave Boleslaw I of Poland a replica of the Holy Lance at the Congress of Gniezno. In 1084, Henry IV had a silver band with the inscription "Nail of Our Lord" added to it. This was based on the belief that the nail embedded in the spear-tip was one that had been used for the Crucifixion of Jesus. It was only in the thirteenth century that the Lance became identified with that of Longinus, which had been used to pierce Christ's side and had been drenched in the Blood of Christ and water.
The Golden Arrow prayer
Sister Mary stated that Jesus told her that the two sins which offend him the most grievously are blasphemy and the profanation of Sunday. He called this prayer the "Golden Arrow", saying that those who would recite it would pierce Him delightfully, and also heal those other wounds inflicted on Him by the malice of sinners. Sr. Mary of St. Peter saw, "streaming from the Sacred Heart of Jesus, delightfully wounded by this 'Golden Arrow,' torrents of graces for the conversion of sinners.
This prayer appears in the book “The Golden Arrow”, the autobiography of Sr. Marie of St Peter. In her book she wrote that in her visions Jesus told her that an act of sacrilege or blasphemy is like a "poisoned arrow", hence the name “Golden Arrow” for this reparatory prayer.