During the siege of Antioch, Peter Bartholomew began to have visions, mostly of Saint Andrew. He claimed Saint Andrew took him to the Church of St. Peter, and showed him where the relic of the Holy Lance could be found. Peter found the metal tip of the spear, which raised the morale of the soldiers. This was important in defeating Kerbgoha later during the Battle at Antioch, however its importance is debated.
'The unearthing of the Lance was not the overwhelming catalyst to action' - Asbridge