Well now, that’s really two different questions, isn’t it?
Do we need Mary’s intercession to save us? No. We are joined to Christ’s death and ressurection in baptism and imparted with saving Grace at that point.
But do we as humans need SOMETHING from Mary to receive salvation? Yes! Mary played an integral role in God’s plan, insofar as she served several key purposes:
- Mary’s body is the temple of the New Covenant, and her womb is the Tabernacle of Christ, where He reposed before His incarnation and final Passover Sacrifice.
- Mary is the “King’s doorway into Israel” prophecied by Isaiah
- Where Eve’s disobedience made her cursed and led to the downfall of mankind, Mary’s obedience made her blessed and led to the salvation of mankind… she is the new Eve.
Furthermore, we must realize that God doesn’t make arbitrary decisions, ESPECIALLY not around the salvation of mankind. God ordains things to be because it is right and good that they should be that way… so when God ordained Mary to be the mother of Christ, He did so because it was right and good that she should be the mother of Christ.
So is Mary’s intercession necessary to save us? No. Is Mary an integral part in God’s continuing plan for the salvation of man? Yes.
Just as the Bible says: We must believe and be baptised.
And as St Paul clarifies: to believe is to love Christ, and to love Christ is to follow His commandments: chiefly to love God and to love our neighbors as God loves us (and in so doing, to live as righteous a life as we can and to repent of our sins when we fail)… in those two commandments (love God and love our neighbors) all the moral law is summarized.