Let me post a little blurb of the change in attitudes of pre and post Vat 11
Pre-Vatican II Image of Church
• The Church as teacher; possessor of truth
• Outside the Church there is no salvation
• The world as hostile and threat to Church
• Other religions are in error or simply false
• Mission of Church is the conversion to eternal salvation
Vatican II Image of Church
• The Church as pilgrim people, community of believers
• Elements of revelation and salvation outside the Church
• Mission of dialogue with other Christians and Religions
• Collaborative Church, shaping the world together with others
And for Nostra Aetate a document on other religions
The Catholic Church rejects nothing of what is true and holy in these religions. (Both Christian and non-Christian)
She has a high regard for the manner of life and conduct, the precepts and doctrines which, although differing in many ways from her own teaching, nevertheless, often reflect a ray of that truth which enlightens all men.
• The Church, therefore, urges her sons to enter with prudence and charity into discussion and collaboration with members of other religions.
• Let Christians, while witnessing to their own faith and way of life, acknowledge, preserve and encourage the spiritual and moral truths found among non-Christians, and also their social life and culture