UNAM SANCTAM (Promulgated November 18, 1302)
Urged by faith, we are obliged to believe and to
maintain that the Church is one, holy, catholic, and
also apostolic. We believe in her firmly and we confess
with simplicity that outside of her there is neither
salvation nor the remission of sins, as the Spouse in
the Canticles [Sgs 6:8] proclaims: 'One is my dove,
Furthermore, we declare, we proclaim, we define that it is absolutely necessary for salvation that every human creature be subject to the Roman Pontiff.
His Holiness Boniface VIII
On the 18th Day of November 1302 in the Year of Our Lord
POPE BONIFACE VIII's UNAM SANCTAM (unamsanc.htm)
DAILY CATHOLIC