📖 Biblical Definition
From Latin mediator (one who stands between); Greek mesites; the doctrine that Christ is the one and only Mediator between God and men, the God-man who reconciles God and fallen humanity through His mediatorial work. The foundational text: For there is one God, and one mediator between God and men, the man Christ Jesus; Who gave himself a ransom for all (1 Timothy 2:5-6). The doctrine of Christ as Mediator. (1) The necessity of a mediator: fallen man, alienated from the holy God by sin and under His just wrath, cannot approach God directly or reconcile himself; a mediator is needed to stand between the offended God and the offending sinner, to reconcile the two. (2) The qualifications of the Mediator: only the God-man could mediate — as God, He has infinite worth and access to God; as man, He represents men and stands in their place; uniting both natures in His one Person, He alone can lay His hand upon both God and man (the longing of Job 9:33, neither is there any daysman betwixt us, that might lay his hand upon us both, answered in Christ). (3) The mediatorial work: Christ mediates in His threefold office (prophet, priest, king), supremely as Priest, offering Himself as the ransom and interceding for His people; He is the Mediator of the new covenant (Hebrews 9:15; 12:24), the surety of a better covenant (Hebrews 7:22), through whom alone we have access to the Father (John 14:6, no man cometh unto the Father, but by me; Ephesians 2:18). (4) The exclusivity of the Mediator: there is ONE Mediator (1 Timothy 2:5); Christ alone mediates between God and men; no other mediator — not Mary, not the saints, not angels, not priests in the Roman sense — stands between God and men. The patriarchal-Reformed reader holds the substantive doctrine of Christ the one Mediator against the Roman Catholic system of secondary mediators (the intercession of Mary and the saints, the mediatorial priesthood) and against every attempt to approach God apart from Christ. There is one God and one Mediator, the man Christ Jesus; through Him alone the sinner is reconciled to God and has access to the Father; He is the all-sufficient, exclusive, and only Mediator of the covenant of grace.
📜 Webster 1828 Definition
From Greek mesites; the doctrine that Christ is the one Mediator between God and men (1 Timothy 2:5), the God-man who reconciles God and fallen humanity through His mediatorial work in His threefold office; the exclusive Mediator against the Roman system of secondary mediators (Mary, the saints, the priesthood).
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MEDIATOR (DOCTRINE), n. (Christology / soteriology; Latin mediator; Greek mesites) Christ is the one and only Mediator between God and men. Foundation: 1 Timothy 2:5-6 (one God, and one mediator between God and men, the man Christ Jesus; who gave himself a ransom). (1) Necessity: fallen man cannot approach the holy God or reconcile himself; a mediator is needed. (2) Qualifications: only the God-man could mediate (as God, infinite worth and access; as man, representing men; uniting both, He lays His hand on both, Job 9:33). (3) Work: mediates in His threefold office, supremely as Priest; Mediator of the new covenant (Hebrews 9:15; 12:24); access to the Father through Him alone (John 14:6). (4) Exclusivity: ONE Mediator; no other (not Mary, the saints, angels, or priests). Held against the Roman system of secondary mediators.
📖 Key Scripture
1 Timothy 2:5-6 — "For there is one God, and one mediator between God and men, the man Christ Jesus; Who gave himself a ransom for all, to be testified in due time."
Hebrews 9:15 — "And for this cause he is the mediator of the new testament, that by means of death, for the redemption of the transgressions that were under the first testament, they which are called might receive the promise of eternal inheritance."
John 14:6 — "Jesus saith unto him, I am the way, the truth, and the life: no man cometh unto the Father, but by me."
Job 9:33 — "Neither is there any daysman betwixt us, that might lay his hand upon us both."
⚠️ Modern Corruption
Christ is the one and exclusive Mediator (1 Timothy 2:5); the principal corruption is the Roman Catholic system of secondary mediators (the intercession of Mary and the saints, the mediatorial priesthood) that interposes other mediators between God and men.
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The doctrine of Christ as the one Mediator is held principally against the Roman Catholic system of secondary mediators. Roman Catholic theology and practice interpose other mediators between God and men: the intercession of Mary (invoked as Mediatrix and co-redemptrix in popular and some official Catholic devotion); the intercession of the saints (prayers addressed to the saints, who are held to intercede with God on the petitioner's behalf); and the mediatorial priesthood (the Catholic priest as a mediator who offers the sacrifice of the mass and dispenses grace through the sacraments). The biblical doctrine is emphatic: there is ONE Mediator between God and men, the man Christ Jesus (1 Timothy 2:5); the exclusivity is the point of the verse (one God, one Mediator). The patriarchal-Reformed reader holds the substantive doctrine: Christ alone is the Mediator; through Him alone the sinner is reconciled to God; through Him alone the believer has access to the Father (John 14:6; Ephesians 2:18; Hebrews 4:14-16, coming boldly to the throne of grace through our great High Priest); no other mediator — not Mary, not the saints, not angels, not any human priest — stands between God and men. The believer prays directly to God through Christ the one Mediator, needing no secondary intercessor; the priesthood of all believers (1 Peter 2:9) means every believer has direct access to God through the one Mediator. The exclusivity and all-sufficiency of Christ's mediation is a precious gospel truth: the believer comes to God not through a hierarchy of secondary mediators but directly through the one Mediator, the God-man Christ Jesus, who ever lives to make intercession for him (Hebrews 7:25).
🔗 Greek & Hebrew Roots
Greek mesites; Christ the one Mediator between God and men (1 Timothy 2:5); the God-man reconciling God and fallen humanity in His threefold office; the exclusive Mediator against the Roman system of secondary mediators.
Usage
"Mediator: Christ the one Mediator between God and men (1 Timothy 2:5)."
"Only the God-man could mediate; access to the Father through Him alone (John 14:6)."
"The exclusive Mediator, against the Roman system of secondary mediators (Mary, the saints, the priesthood)."