prima decas

All say the invocation, Sanctus Deus…; afterwards the Lord’s Prayer is said as usual, alternating the priest (or whoever presides) with the people. Then whoever presides says nine times the prayer, Tibi Laus…. Each time the people answer with the prayer Sanctus, Sanctus...

Sanctus Deus, Sanctus fortis, Sanctus immortális, miserére nobis.

Pater Noster...

℣. Tibi laus, Tibi glória, Tibi gratiárum áctio in sǽcula sempitérna, O Beáta Trínitas.

℟. Sanctus, Sanctus, Sanctus Dóminus Deus exercítuum. Pleni sunt cæli et terra glória tua.

℣. Glória Patri, etc.

℟. Sicut erat, etc.

The Second and Third Decades are said in the same way, beginning with the words: Sanctus Deus...