St. Zephyrinus, Pope and Martyr
He had to defend the dogma of the unity of God and the Trinity of persons against the Sabellians. Besides this intestine strife he had to suffer persecution. God always supported him in his trials, in order to enable him to support the flock of Christ (Epistle). He died in A.D. 218 after a pontificate of seventeen years.
Sacerdotes Dei, benedicite Dominum: sancti et humiles corde, laudate Deum. * Benedicite, omnia opera Domini, Domino: laudate et superexaltate eum in saecula.
O ye priests of the Lord, bless the Lord: O ye holy and humble of heart, praise God. * All ye works of the Lord, bless the Lord: praise and exalt Him above all for ever.
(Daniel 3:84,87,85 from the Introit of Mass)
Praesta, quaesumus, omnipotens Deus: ut beati Zephyrini Martyris tui atque Pontificis, cujus gaudemus meritis, instruamur exemplis.
O almighty God, grant, we beseech Thee, to us who rejoice in the merits of blessed Zephyrinus, Thy martyr and bishop, that we may profit by the example of his life.
From the Catholic Encyclopaedia: http://www.newadvent.org/cathen/15756c.htm