It is lit to show that Jesus is in the Tabernacle under the aspect of bread.
Jesus is the Light, they indicate that he is present.
Churches have sanctuary lamps because it represents the presence of god.
I think it is to remind us of God's presence there.
When the sanctuary lamp is burning it indicates that the Blessed Sacrament is present in the tabernacle.
the sanctuary lamp is a light or lit candle that shines red; it indicates the presence of Jesus in the tabernacle
It's just Catholic, not Roman Catholic. Roman is an epithet first commonly used in England after the protestant revolt to describe the Catholic Church. It is never used by the official Catholic Church. By Canon Law (Church Law), an oil lamp, know as a Sanctuary lamp, must always be burning before the Blessed Sacrament. This is usually a clear or red glass lamp on or above the altar where the Blessed Sacrament is reposed.
sanctuary lamp
The sanctuary is the part of the church which contains the altar.
Sanctuary
the Sanctuary
The sanctuary is the most important area because it is considered the holiest place. In the old testament no one but the priest was allowed to enter the holy place because that is were God was.
Sanctuary lamps actually date back to ancient Jewish times and the custom followed into the early Christian Church. God ordered that an oil lamp be kept burning constantly before the Jewish tabernacle in the temple.
The Sanctuary Lamp is kept burning in front of the tabernacle in Catholic churches as a sign and a reminder that Jesus is really present in the Eucharist (Consecrated Host) stored in the tabernacle. In the Old Testament, God commanded that a lamp should always burn in the Tabernacle (Exodus 27:20-21). If there are no Consecrated Hosts in the tabernacle then the lamp is extinguished. This happens in every Catholic Church after Holy Thursday Mass until the Easter Vigil Mass on Holy Saturday night.
A Catholic Church has as its main focus a Sanctuary which contains an Altar, Ambo, and the Tabernacle which are all used in the Celebration of the Most Holy Mass.
Roman Catholic AnswerThe altar (and the priest when he is at the altar) are contained in the sanctuary of the Church.
Very near the taberncale where the blessed sacrament ( body of Christ is kept)