Oil lamp placed near the tabernacleA small cupboard in the choir or in a specially designated chapel in which the consecrated hosts are kept. to indicate the presence of consecratedIn the Roman Catholic Church, the moment when, during the Eucharist, the bread and wine are transformed into the body and blood of Jesus, the so-called transubstantiation, by the pronouncement of the sacramental words. hosts. In the past this was usually a lamp suspended from three chains. Nowadays it can also be a table lamp. Usually, the sanctuary lamp has a red glass to distinguish it from ordinary candles.