What a sad and pointless anti-Scriptural error which deprives Roman Catholics of God's full measure of assurance. No wonder there's so much neurosis in Rome. RCs are running a race they cannot win because salvation "is not of him that willeth, nor of him that runneth, but of God that sheweth mercy."
For whosoever shall call upon the name of the Lord shall be saved." -- Romans 10:9;13
"For the preaching of the cross is to them that perish foolishness; but unto us which are saved it is the power of God." -- 1 Corinthians 1:18
"Be not afraid; only believe." -- Mark 5:36"That if thou shalt confess with thy mouth the Lord Jesus, and shalt believe in thine heart that God hath raised him from the dead, thou shalt be saved...
Michael Corleone: Oh, God, you hate me. You hate me.
What makes you think that Romans 10:9;13 in any way contradicts Catholicism, let alone the book of Matthew and the book of Romans itself?
It is entirely true that one who has well informed faith will be saved. In fact, one who has a well informed faith is — what else — Catholic or Orthodox. Adherence to Luther’s obsessions and Calvin’s babblings is not faith, it is a breach of it.
Extra Ecclesiam nulla salus.