Vergleich der Religion: Abschluss - a podcast by Fabian Kreutz

Is Salvation Possible for Non-Catholics? (youtube, englisch)

Is There Salvation Outside the Church? - Jimmy Akin (youtube, englisch)

Lumen Gentium

Katechismus 846/847

Extra ecclesiam nulla salus (Wikipedia)

Evangelium nach Johannes, Kapitel 14

Further episodes of Die Weisheit anderer Leute

Further podcasts by Fabian Kreutz

Website of Fabian Kreutz