Jesus Christ is the ONLY mediator (intermediary, conciliator) between God and mankind. There is no other, despite what other religious philosophies may affirm.
For there is one God and one Mediator between God and men, the Man Christ Jesus . . . (1 Tim 2:5)
There is no arbitrator between us, who could lay his hand upon us both [would that there were]. (Job 9:33 AMP) In the Old Testament, the thought of a mediator between God and mankind was considered a hoped-for dream. This is because ONLY Jesus Christ is both God and man. Jesus is able to comprehend both man and God.
A mediator, however, implies more than one party; but God is one. (Gal 3:20 NIV) A mediator comes between two parties, persons, or points of view. A mediator is a go-between or an agent for both points of view.
This is why he’s the mediator of a new covenant (which is a will): so that those who are called might receive the promise of the eternal inheritance on the basis of his death. His death occurred to set them free from the offenses committed under the first covenant. (Heb 9:15 CEB) Jesus is the mediator of the New Testament. Jesus is our Peacemaker. Glory to God most High!