The term "Co-redemptrix" refers to a subordinate but essential participation by the Blessed Virgin Mary in redemption, notably that she gave free consent to give life to the Redeemer, to share his life, to suffer with him under the cross, to offer his sacrifice to God the Father for the sake of the redemption of mankind. Related to this belief is the concept of Mediatrix which is a separate concept but regularly included by faithful who use the title of co-redemptrix.
Co=redemptrix is not a doctrine of the catholic church.
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