What is the Ostensorium or Monstrance?
A. The Ostensorium or Monstrance is the beautiful wheel-like vessel in which the Blessed Sacrament is exposed and kept during the Benediction. Q. 946. How should we assist at Mass? A. We should assist at Mass with great interior recollection and piety and with every outward mark of respect and devotion. Q. 947. Which is the best manner of hearing Mass? A. The best manner of hearing Mass is to offer it to God with the priest for the same purpose for which it is said, to meditate on Christ’s sufferings and death, and to go to Holy Communion. Q. 948. What is important for the proper and respectful hearing of Mass? A. For the proper and respectful hearing of Mass it is important to be in our place before the priest comes to the altar and not to leave it before the priest leaves the altar. Thus we prevent the confusion and distraction caused by late coming and too early leaving. Standing in the doorways, blocking up passages and disputing about places should, out of respect for the Holy Sac
