She is fruitful by being fully conformed to Wisdom.
She is the way to her Son, as the Son is the way to our Father (cf. Pope Leo XIII)
“I am the mother of fair love, and of fear, and of knowledge, and of holy hope.
In me is all grace of the way and of the truth, in me is all hope of life and of virtue.
Come over to me, all ye that desire me, and be filled with my fruits.” (Sir 24:24-26 vulg.)
mediatrix
Jesus is the only mediator between man and God. Period. However, we can ask each other to “mediate” for each other. Have you ever asked anybody to pray for you? Their prayer is still done through Jesus. Mary’s prayers for us are extremely powerful being the Mother of God and all
We believe the Church triumphant (the saints in heaven) can hear our prayer requests when directed at them.
co redemptrix
Jesus is our redeemer. Period. However, Mary played a role in our redemption; she cooperated with God’s grace in agreeing to give birth to and raise our redeemer, Jesus.
Keep in mind as Catholics we do not have to refer to Mary with the above titles but they are commonly used by many. Not dogmatic issues but this is what is meant by the above
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