De fide:
De fide (of the faith) is a “theological note” “theological qualification” that indicates that some religious doctrine is an essential part of Catholic faith and that denial of it is heresy.[1] The doctrine is de fide divina et ecclesiastica (of divine and ecclesiastical faith), if contained in the sources of revelation and therefore believed to have been revealed by God (de fide divina) and if taught by the Church (de fide ecclesiastica). If a doctrine has been solemnly defined by a pope or an ecumenical council as a dogma, the doctrine is de fide definita. [Wikipedia]
Noted in “US Catholic bishops advance communion document, setting up potential rebuke of Biden,” Tom Foreman, CNN/Politics:
“I accept my church’s position on abortion as a what we call de fide doctrine. Life begins at conception. That’s the church’s judgment. I accept it in my personal life,” [then Vice President Joe Biden] said during the 2012 vice presidential debate. “But I refuse to impose it on equally devout Christians and Muslims and Jews. I just refuse to impose that on others,” he said.
