Jesus Christ as Mediator and Advocate in Theology
Christ's mediatorial role rests on the scriptural declaration that "there is one God, and one mediator between God and men, the man Christ Jesus" [1, 2]. This singular mediation addresses the fundamental problem of estrangement between a holy God and fallen humanity, requiring an intermediary who can bridge the divide. The term "mediator" denotes one who intervenes between parties at variance to effect reconciliation [4], a concept anticipated in Job's longing for a "daysman" who might lay hands upon both God and man [3, 8].
The Basis of Mediation
Christ mediates "in virtue of his atonement" [3], making his work inseparable from his sacrificial death. He stands as "the Mediator of the gospel covenant" [3, 6], fulfilling and superseding the typological mediation of Moses and Aaron under the old covenant [3]. The Mosaic mediation required an intermediary between two parties [7, 8], but Christ's mediation differs fundamentally: he represents not merely a contractual arrangement but the direct promise of God to Abraham and its fulfillment in Christ as "the Seed" [7]. Calvin's commentary emphasizes that Christ served as Mediator even for those who died before his incarnation, "from the foundation of the world" [9], since there can be no other mediator any more than there can be another Creator [9].
Threefold Office
Christ's mediatorial office encompasses three functions: prophet, priest, and king [5]. These are not separate offices but integrated aspects of his single work as mediator. As king, he exercises sovereignty over his Church and "over all things to his Church" [5], a mediatorial kingship distinct from his eternal divine sovereignty. This kingly function executes his mediatorial purposes on behalf of his people.
The Advocate Function
While "mediator" emphasizes Christ's reconciling work through atonement, the concept of advocacy (though not explicitly developed in these sources) extends his ongoing intercessory role. The mediatorial framework established in Hebrews 8:6, 9:15, and 12:24 [3, 6] presents Christ not merely as one who effected reconciliation historically but as the continuing guarantor of the new covenant relationship.
The exclusivity of Christ's mediation—"the only one between God and man" [3]—underscores that no other figure, whether angelic or human, can perform this reconciling function. His qualification rests on his unique identity as both fully God and "the Man Christ Jesus" [1], able to represent both parties in the mediatorial transaction.
Sources
- I Timothy “I Timothy 2:5 (LITV) — For God is one, also there is one Mediator of God and of men, the Man Christ Jesus,”
- 1 Timothy “For there is one God, and one mediator between God and men, the man Christ Jesus, -- 1 Timothy 2:5”
- Torrey's Topical Textbook “Torrey's Topical Textbook: Christ, the Mediator — In virtue of his atonement -- Eph 2:13-18; Heb 9:15; 12:24. The only one between God and man -- 1Ti 2:5. Of the gospel covenant -- Heb 8:6; 12:24. Typified Moses. -- De 5:5; Ga 3:19. Aaron. -- Nu 16:48.”
- Easton's Bible Dictionary “Easton's Bible Dictionary: Mediator — One who intervenes between two persons who are at variance, with a view to reconcile them. This word is not found in the Old Testament; but the idea it expresses is found in Job 9:33, in the word "daysman" (q.v.), marg., "umpire." This word is used in the New Testament to denote simply an internuncius, an ambassador, one who acts as a medium of communication between two contracting parties. In this sense Moses is called a mediator in Gal. 3:19. Christ is the one and only mediator between God and man (1 Tim. 2:5; Heb. 8:6; 9:15; 12:24). He makes reconciliat”
- Easton's Bible Dictionary “Easton's Bible Dictionary: Kingly office of Christ — One of the three special relations in which Christ stands to his people. Christ's office as mediator comprehends three different functions, viz., those of a prophet, priest, and king. These are not three distinct offices, but three functions of the one office of mediator. Christ is King and sovereign Head over his Church and over all things to his Church (Eph. 1:22; 4:15; Col. 1:18; 2:19). He executes this mediatorial kingship in his Church, and over his Church, and over all things in behalf of his Church. This royalty differs from that whic”
- Torrey's Topical Textbook “Torrey's Topical Textbook: Covenant, The — Christ, the substance of -- Isa 42:6; 49:8. Christ, the Mediator of -- Heb 8:6; 9:15; 12:24. Christ, the Messenger of -- Mal 3:1. Made with Abraham. -- Ge 15:7-18; 17:2-14; Lu 1:72-75; Ac 3:25; Ga 3:16. Isaac. -- Ge 17:19,21; 26:3,4. Jacob. -- Ge 28:13,14; 1Ch 16:16,17. Israel. -- Ex 6:4; Ac 3:25. David. -- 2Sa 23:5; Ps 89:3,4. Renewed under the gospel -- Jer 31:31-33; Ro 11:27; Heb 8:8-10,13. Fulfilled in Christ -- Lu 1:68-79. Confirmed in Christ -- Ga 3:17. Ratified by the blood of Christ -- Heb 9:11-14,16-23. Is a covenant of peace -- Isa 54:9,10; ”
- Galatians (Presbyterian) “Jamieson, Fausset & Brown on Galatians 3:20: "Now a mediator cannot be of one (but must be of two parties whom he mediates between); but God is one" (not two: owing to His essential unity not admitting of an intervening party between Him and those to be blessed; but as the ONE Sovereign, His own representative, giving the blessing directly by promise to Abraham, and, in its fulfilment, to Christ, "the Seed," without new condition, and without a mediator such as the law had). The conclusion understood is, Therefore a mediator cannot appertain to God; and consequently, the law, with its insepara”
- Galatians (Baptist/Reformed) “John Gill on Galatians 3:20: Now a mediator is not a mediator of one,.... A mediator supposes two parties he stands between, and these at a distance from, or disagreeing with each other; where there is but one party, there can be no need of, nor any reason for, a mediator; so Christ is the Mediator between God and men, the daysman, Job 9:33, that lays his hands upon them both; and Moses, he was the mediator between God and the Israelites: but God is one; not in person, for there are three persons in the Godhead, the Father, the Word, and the Holy Ghost, and these three are one, in nature and”
- CCEL (Reformed) “Calvin, Commentary on 1-2 Timothy, Titus, Philemon, section 10.2: of man, so there is but one Mediator for men. As God is the God of all that died before Christ came, as well as of those that died after; so Christ is the Mediator of all that died before his coming, as well as of those that saw his day. They had Christ for their Mediator, or some other; some other they could not have, because there is but one. They might as well have had another Creator besides God, as another Mediator besides the man Christ Jesus. In regard of the antiquity of his mediation, from the foundation of the world, h”