[NotQuiteCricket]

http://www.catholic.com/library/Salvation_Outside_the_Church.asp

However, for those who knowingly and deliberately (that is, not out of innocent ignorance) commit the sins of heresy (rejecting divinely revealed doctrine) or schism (separating from the Catholic Church and/or joining a schismatic church), no salvation would be possible until they repented and returned to live in Catholic unity.

[Bosco]

Thanks for that url. Good one. I note that the church fathers were cited but none from Scripture. C'est la vie!