"and left the tabernacle open and empty, as though from now on it was always to be Good Friday."
Tabernacle on the Lady Altar, Birmingham Oratory
Creative Commons AttributionTabernacle on the Lady Altar, Birmingham Oratory - Credit: James Bradley, Flickr

In the Catholic Church, a tabernacle is a lockable box in which the bread consecrated during Mass (which represents the body of Christ) is stored.

Special rituals are observed by Catholics during Holy Week (the week leading up to Easter); one of these is to leave the tabernacle open and empty on Good Friday until the resumption of Mass on the evening of Holy Saturday.