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.
Christian cross
Jehovah's Witnesses do not use the symbol of the cross in their worship, which they believe constitutes idolatry. They believe that Jesus died on a single upright torture stake rather than a two-beam cross, arguing that the Greek term "stauros" indicated a single upright pole. Although early Watch Tower Society publications associated with the Bible Student movement taught that Christ was executed on a cross, it no longer appeared on Watch Tower Society publications after the name "Jehovah's witnesses" was adopted in 1931, and use of the cross was officially abandoned in 1936.