I will show you an evidence
that the title "Vicarivs Filii Dei" was once used by the pope
VICARIUS FILII DEI USED TWICE BY POPE PAUL VI
IN OFFICIAL PAPAL DECREES
Vicarius Filii Dei was used twice by Pope Paul VI in documents found on
the Vatican's web site. These are Apostolic Constitutions, which are
the highest form of official Papal decree in the Roman Catholic Church
and are issued with binding legal authority. Historically these decrees
were known as papal bulls, the name referring to the lead metal seal
(bulla) attached to authenticate the document. As a general rule, the
superscription that opens papal bulls typically reads:
NAME (without ordinal number) EPISCOPUS, SERVUS SERVORUM DEI, AD PERPETUAM REI MEMORIAM
So, the following Apostolic Constitutions begin:
PAULUS, EPISCOPUS, SERVUS SERVORUM DEI, AD PERPETUAM REI MEMORIAM
PAUL, BISHOP, SERVANT OF THE SERVANTS OF GOD, FOR EVERLASTING REMEMBRANCE OF THE MATTER
Bafianae (January 11, 1968), Decree of Paul VI elevating the Prefecture Apostolic of Bafia, Cameroon, to a Diocese:
Acta Apostolicae
Sedis, Commentarium Officiale, vol. LX (1968), n. 6, pp. 317-319.
Libreria Editrice Vaticana. ISBN 8820960680, 9788820960681.
Scans: Title page - 317 - 318 - 319.
Adorandi Dei Filii Vicarius et Procurator, quibus numen aeternum summam Ecclesiae sanctae dedit, ...
As
the worshipful Son of God's Vicar and Caretaker, to whom the eternal
divine will has given the highest rank of the holy Church, ...
