Most High God!
Thou that enkindlest the fires of the shining stars!
Thou that art peace and life and light and truth, hear and grant our prayers.
This present day has been made holy by thy mystic baptism, whereby thou didst sanctify those waters of the Jordan, which of old were thrice turned back.
It is holy by the star shining in the heavens, whereby thou didst announce thy Virginal Mother’s delivery and didst, on the same day, lead the Magi to adore thee in thy crib.
It is holy too, by thy changing the water of the pitchers into wine; which the steward of the feast, knowing that he had not so filled them, drew forth for the guests.
Glory be to thee, O Lord Jesus, that didst appear on this Day!
And to the Father and to the Holy Spirit, for everlasting ages.
Hymn of St. Ambrose (338-397), used by the Church in Milan0