 It is easy to understand that the early Christians may have attached a quasi-liturgical significance to the lighting of lamps during the Holy Sacrifice when we remember that the pilgrim who, writing in about 530 CE, wrote the so-called "Breviarius", claims to have seen at Jerusalem what purported to be the actual lamp which had hung in the chamber of the Last Supper, preserved there as a precious relic at a site he designates the Basilica of Holy Zion, although there is uncertainty about the exact site to which he refers.In the modern times interest principally centered in the lamp which burned perpetually before the Blessed Sacrament, and it has been the custom with many writers (see e.g.Corblet, "Hist.