Sanctus Dominus -

: The first part is drawn from Isaiah 6:3 , where seraphim (six-winged angels) cry these words while surrounding God's throne.

The full liturgical text, “Sanctus, Sanctus, Sanctus, Dominus Deus Sabaoth” ("Holy, Holy, Holy, Lord God of hosts"), combines ancient visions from both the Old and New Testaments: Sanctus Dominus

In the , the Sanctus is positioned at the conclusion of the Preface and immediately before the Eucharistic Prayer . Theologically, this "thrice-repeated" acclamation emphasizes God's absolute purity and transcendence. Historical Development Learn the Sanctus | FREE Latin Learning Guide : The first part is drawn from Isaiah