De mediatoris invocatione

summation: finally, he is the one in whom it has pleased the Father to recapitulate all things. He to whom this definition applies is the only true Mediator.

VII. That Jesus Christ alone is the Mediator.
The Lord Jesus Christ alone is Immanuel, he is most dear to the Father, he is the sole author of our Election and Redemption: he is present to the Church as King, Priest, and Prophet: he intercedes for us by his merits: he pours the Holy Spirit into us: finally, in him alone are all things gathered together.

VIII. That the Angels are not Mediators.
No Angel is heteroios of a different nature to either God or us men: no one can expiate the sins of men by his own merits: no one is everywhere, such that he can hear the prayers of all: and just as their virtue is defined, so also their nature is circumscribed, so that they exist definitively only in some place.

IX. That holy men are not such Mediators.
No mere human psilos bare/simple, whether alive or dead, is a mediator (so that he would be a theanthropos God-man) and Mediator: as is evident from the communion of another nature, namely the human; from the common guilt of all men; from the fact that even the most holy men have need of a Mediator; from the fact that the honor which is entirely proper to the Head, Christ Jesus, does not belong to the saints as members; from the fact that the holy spirits who dwell in heaven are ignorant of the particular matters that are done here on earth. Isa. 63. 16.