1 Timothy 2:1-6

Beloved:
First of all, I ask that supplications, prayers,
petitions, and thanksgivings be offered for everyone,
for kings and for all in authority,
that we may lead a quiet and tranquil life
in all devotion and dignity.
This is good and pleasing to God our savior,
who wills everyone to be saved
and to come to knowledge of the truth.
For there is one God.
There is also one mediator between God and men,
the man Christ Jesus,
who gave himself as ransom for all.

This is a passage misconstrued frequently to defend anti-catholic ideas, such as the saints and Mary being “mediators” for us. Firstly, the saints and mary are not referred to as mediators, but rather as intercessors. The definition of a mediator is someone who is "acting through" while intercession is “acting on behalf of someone.” God is acting THROUGH Jesus on our behalf, while the saints and Mary are simply ASKING on our behalf, which is exactly what happens when we ask our parents or friends to pray for us. We are not asking them to be mediators between us and God. We’re asking them to intercede, which Paul is telling us in the beginning of this passage to do frequently and for all in Christ.

People also get squeamish with Mary’s title as “Mediatrix.” But if you study the term and what the Church actually teaches, it’s not contrary to Paul’s verse at all. Mary’s role as mediatrix is secondary and dependent completely upon Jesus as the savior. It’s honoring her “yes” and fidelity, recognizing that her openness to obeying God changed the course of everyone’s salvation