Tabernacle
Out of sacred respect, the Blessed Sacrament that is not consumed during Mass is reserved in a tabernacle. Upon entering the church, Catholics genuflect, bending the right knee to the ground, toward the tabernacle, in adoration of the real presence of Christ in the Eucharist.
Also, near the tabernacle is a sanctuary candle that is kept lit to indicate and honor the presence of Christ. Because of Christ’s abiding presence in the tabernacle, the atmosphere of a Catholic Church is kept quiet to promote prayer and adoration of the Blessed Sacrament.