In keeping with our analysis of various parts of the Holy Mass (I am using the Tridentine Rite), let's look at the "Sanctus." It is disturbing that this prayer is said so nonchalantly by many people, even often sung in a folky way which in no way reflects the most sublime nature of these words, which lift us straight up to the Majestic Throne, the Triune God of Heaven. It should take our breath away every time we say it. It should create in us the most humble attitude before our Creator, our hearts lying prostrate. It is the hymn sung by the saints as Our Lord rode humbly into His city, the City of Gold, Yerushalaim, knowing full well what the result would be.....
"Holy, holy, holy, Lord God of hosts! Heaven and earth are full of Thy glory! Hosanna in the highest! Blessed is He that cometh in the Name of the Lord! Hosanna in the highest!"
According to The Daily Missal and Liturgical Manual, Baronius Press, 2008:
"The triumphal hymn of the Angels, the Trisagion (thrice holy), is addressed to the three divine Persons. It is composed of words taken from Isaias...from Psalm 117, and from the acclamations which greeted Jesus on the occasion of His solemn entry into Jerusalem."
In the old Rite, the Sanctus is prayed kneeling, but in the new, unfortunately, that has been changed. This Sunday when we speak or sing this glorious prayer at Holy Mass, may we envision the clouds opening, and Heaven revealing itself, a foretaste of what is to come after our death if we remain in His Body. How wonderful!