Roman Catholicism Says:
Mary suffered with Christ “and nearly died with Him when He died,” thus she “may rightly be said to have redeemed the human race with Christ” (Pope Benedict XV, 1918).
“The Virgin of Sorrows shared the work of redemption with Jesus Christ” (Pius XI, 1923).
“No one can approach Christ except through his Mother” (Pope Leo XIII, 1891).
“My salvation depends upon Mary’s mediation in union with Christ, because of her exalted position as Mediatrix of all Grace ” (catechism in My Sunday Missal).
Vatican II used the title and said Mary’s “intercession continues to win for us gifts of eternal salvation,” but added that this shouldn’t detract from Christ as the “one Mediator."
"This motherhood of Mary in the order of grace continues uninterruptedly from the consent which she loyally gave at the Annunciation and which she sustained without wavering beneath the cross, until the eternal fulfillment of all the elect. Taken up to heaven she did not lay aside this saving office but by her manifold intercession continues to bring us the gifts of eternal salvation. . . . Therefore the Blessed Virgin is invoked in the Church under the titles of Advocate, Helper, Benefactress, and Mediatrix." (Catechism of the Catholic Church 1994 - Paragraph 969).
The Bible Says:
Jesus said to him, "I am the way, and the truth, and the life. No one comes to the Father except through me." (John 14:6 ESV)
This Jesus is the stone that was rejected by you, the builders, which has become the cornerstone. And there is salvation in no one else, for there is no other name under heaven given among men by which we must be saved." (Acts 4:11-12 ESV)
For there is one God, and there is one mediator between God and men, the man Christ Jesus, (1 Timothy 2:5 ESV)
Logic tells us that both Mary and Jesus can't be Saviour. Either Mary is saviour, and Jesus is not, or Jesus is the Saviour and Mary is not, they both cannot be the Saviour. The Bible makes it clear that salvation is accomplished through Jesus Christ alone. He is the only mediator between God and men (1 Timothy 2:5) and the only way to the Father (John 14:6), Jesus is the only name given for people to be saved (Acts 4:12).
So which will you believe? God's Word, the Bible? Or the teachings of men, that is, the teaching of the Roman Catholic Church, that believes that Mary is the giver of salvation? Will you be on God's side, and trust in His Word, or would you believe an institution that goes against the Bible?
Your answer will have eternal ramifications.