Was there a good point made in the sermon you heard during your Mass of Sunday Obligation? Let us know.
For my part, in my conviction that we need more liturgical catechesis as well as eschatological catechesis (the two are tied together) I spoke about the words “mysterium fidei” during the consecration of the Precious Blood.
After initial comments about the preparation for death as the over-arching “end” of Mass, that gives purpose and shape to the classic “four ends”, I shed some light on the two-fold consecration.
Among other things, I pointed out the shocking innovation of pulling the “mysterium fidei” out of the consecration formula and transforming it into a kind of acclamation. That change was a direct contravention of the mandates of the Council Fathers that a) no change should be made except for the true good of the people and b) that it should be in keeping, organically, with what we have always done (cf. Sacrosanctum Concilium). “Mysterium fidei” was part of the consecration form since at least the 8th c. Moreover, there are options for responding to the “mysterium fidei” in the Novus Ordo, which makes it hard to determine what the “rite itself” thinks “mysterium fidei” means.
I stressed that the claims of some that removing the “mysterium fidei” from the consecration invalidated the consecration form were simply wrong. It is a shocking innovation, but it doesn’t invalidate. I mentioned that in ancient times, a curtain was drawn across the sanctuary, obscuring view and that the deacons would announce “mysterium fidei” probably stemming from 1 Tim 3, stressing that they have to believe in the Eucharist steadfastly. Deacons had a close tie to ministry concerning the Precious Blood. In a solemn Mass, the deacon still prepares the chalice and then says the offertory prayer together with the priest or bishop while holding the base. In any event, the “mysterium fidei” indicates that the change of substance has taken place and that the Body and Blood have been separated in the two-fold consecration, thus sacramentally, symbolically, renewing the death of the Lord on the Cross. You can’t say everything in one moment, but you can say somethings.
Also, I made a point that lay people share in the mission of the Church to teach all nations. I personally can’t reach all the people that you know, but YOU can reach all the people that you know. When you love something, you want to share it. When you have charity for someone, you want what is best for them. Hence, deeper catechesis about liturgy and eschatology, especially for those who desire the traditional forms. We have to be ready at all times to give reasons and explanations, with charity.