Holy of Holies

To the left and right of the sanctuary are two illuminated columns which appear in the Book of Kings,  directly in front of the Holy of Holies.  In the Old Testament, these had names, Jachin and Boaz.  They stand at the entrance to the Holy of Holies, the room of the Tabernacle which houses the Blessed Sacrament, or Eucharist,  the consecrated elements of the Mass.