[Salvation]

Pontiff Calls for Complete Fidelity to Magisterium (and Doctrine)
Catholic Biblical Apologetics:Being Catholic & Christian:Faith and Salvation-Authoriative Doctrine
Doctrine of the Church -Social Credit: applied Christianity
The Three D's -- Dogma, Doctrine and Discipline [Ecumenical]
Mary in Byzantine Doctrine and Devotion (Catholic / Orthodox Caucus)
If the Embryo is Human, It is a Person: Vatican Doctrine Official

[Salvation]

“De Fide” means of the faith. That which is “De Fide” must be believed by Catholics.
“Sent. Certa” is an observation that is certain.