Our Lady of the Pillar (Spanish: Nuestra Señora del Pilar) is the name given to the Blessed Virgin Mary in the context of the traditional belief that Mary, while living in Jerusalem, supernaturally appeared to the Apostle James the Greater in AD 40 while he was preaching in what is now Spain. Those who adhere to this belief consider this appearance to be the only recorded instance of Mary exhibiting the mystical phenomenon of bilocation.[2] Among Catholics, it is also considered the first Marian apparition, being unique due to having occurred while Mary was still living on Earth.[3]