Upon the altar of God, I'll think them worlds,
If to your soul they seem so; and for the rest—
[A knock brings consternation, this time to all. The dancers fall to crossing themselves, some kneeling. As they do so the gate is thrown open and Querio enters; he is followed by several guards.
Querio (advancing; amid awe).
In the name of the
Vicar of God who sits at Rome,
And of the Holy Office, I arrest
The giver of these pagan rites and revels.
[Guards step to Rizzio's side; he stands speechless.
Porzia (stunned).