Mirae modis repente liber ferrea

The Lord commands; and, lo, his iron chains,
Falling from Peter, the command obey:
Peter, blest shepherd! who, to verdant plains.
And life’s immortal springs, from day to day.
Leads on his gentle charge, driving all wolves away.

Praise to the Father, through all ages be;
The same to Thee, O coeternal Son,
And Holy Ghost, One glorious Trinity;
To whom all majesty and might belong;
So sing we now, and such be our eternal song.