Theopedia

Solus Christus

“For there is one God, and there is one mediator between God and men, the man Christ Jesus.”

— 1 Timothy 2:5 (ESV)

Definition

Solus Christus (Latin for “Christ alone”) is the confession that Jesus Christ is the sole mediator between God and man, so that no other person or work may share his office of reconciling sinners to God.1 As prophet, priest, and king, he alone reveals God’s will, alone offers the sacrifice that satisfies divine justice, and alone rules and intercedes for those he saves; a departed saint, an angel, or a human priest shares none of that work alongside him.2 The doctrine excludes not only false gods but any addition, however reverently intended, to Christ’s own sufficiency.

Confessional Witness

The doctrine that Christ alone holds the office of mediator, admitting no rival or supplement, is the collective witness of the Reformed confessional family. The Westminster Confession (1646), the Savoy Declaration (1658), and the 1689 Second London Baptist Confession each open their chapter “Of Christ the Mediator” with nearly identical wording, stating that God chose “the Lord Jesus, his only begotten Son… to be the Mediator between God and man; the prophet, priest, and king.”3 The 1689 confession then states the exclusivity directly:

“This office of mediator between God and man is proper only to Christ, who is the prophet, priest, and king of the church of God; and may not be either in whole, or any part thereof, transferred from him to any other.”1

The Heidelberg Catechism (1563), also part of the wider Reformed confessional family, puts the same exclusivity in personal, catechetical form, asking directly whether a believer may seek salvation anywhere but in Christ:

“Do such then believe in Jesus the only Saviour, who seek their salvation and welfare of saints, of themselves, or anywhere else? They do not; for though they boast of him in words, yet in deeds they deny Jesus the only deliverer and Saviour.”2

The same catechism assigns Christ’s three offices, prophet, priest, and king, to the meaning of the name “Christ” itself, matching the London confession’s own threefold structure.4

Biblical Basis

Scripture states Christ’s unique mediatorship as a settled fact rather than an inference: “there is one God, and there is one mediator between God and men, the man Christ Jesus” (1 Tim. 2:5). Peter ties the same exclusivity directly to salvation: “there is salvation in no one else, for there is no other name under heaven given among men by which we must be saved” (Acts 4:12), and Christ says of himself, “no one comes to the Father except through me” (John 14:6).

The mediatorial office covers Christ’s whole saving work, not one function among several he performs. Hebrews three times calls him “the mediator” of the new covenant (Heb. 8:6, 9:15, 12:24), a title both Jewish and pagan thought had reached for in their own way, Jewish tradition naming the coming Messiah “the Mediator, or middle one” and pagan religions inventing their own mediating spirits, “but we have a more sure word of prophecy to direct us in this matter; Christ is the one and only Mediator.”5 The office joins two works Scripture never separates: Christ “always lives to make intercession” for those he saves (Heb. 7:25), and that intercession rests on the atonement he alone accomplished, since “no one can be a mediator of intercession, who is not also of redemption.”6 A mediator who prayed for sinners without dying for them, or who died for them without continuing to intercede, would answer to only half of what Scripture calls mediation.

Historical Development

From Ephesus to the medieval invocation of saints

The controversy behind the Reformation-era doctrine reaches back to a christological question, not a Marian one. The ecumenical Council of Ephesus, meeting in AD 431, declared the Virgin Mary “Mother of God” primarily to defend Christ’s own true divinity against Nestorius, who was understood to teach that the divine Word merely inhabited the man Jesus rather than being personally united to him.7 The council’s decision, followed over the medieval centuries by an accumulation of liturgical practice (the assertion of Mary’s perpetual virginity, then of a supernatural birth, then formal invocation in public worship), gradually extended well past that original christological point. By the late Middle Ages, offices and psalters addressed to Mary paralleled Scripture’s own address to God, one example replacing “Blessed is the man who walketh not in the counsel of the ungodly” (Ps. 1:1) with “Blessed is the man who loveth thy name, O Virgin Mary.”7 Alongside Mary, the wider practice of invoking departed saints as intercessors had become settled devotional practice, defended on the ground that asking a holy man’s prayers, though God alone grants grace or glory, still helps one’s own prayers take effect through the saint’s merits and intercession.8

The Reformation’s response and Rome’s answer

Reformation-era confessions answered this practice by name. The Heidelberg Catechism (1563) requires the believer to “avoid and flee from all idolatry, sorcery, soothsaying, superstition, invocation of saints, or any other creatures; and learn rightly to know the only true God; trust in him alone.”9 The Second Helvetic Confession (1566) states the point still more directly: “Let all the prayers of the faithful be poured forth to God alone, through the mediation of Christ only… The priesthood of Christ the Lord and true religion forbid the invocation of saints in heaven or to use them as intercessors.”10

Rome’s own answer came at the Council of Trent’s twenty-fifth session (1545-63), whose decree on the saints directs bishops to teach that the saints who reign with Christ offer their own prayers to God for mankind, that it is good and useful to invoke them suppliantly and to seek benefits from God through Christ by means of their aid, and that this practice does not, contrary to the Reformers’ charge, dishonor Christ as the one mediator between God and man.11 The two traditions have disagreed on this point since the sixteenth century: both invoke Christ’s unique mediatorship, but disagree over whether a creature’s subordinate intercession compromises it.

Opposing Views

Roman Catholic theology distinguishes several kinds of reverence: latria, the worship owed to God alone; dulia, honor given to the saints; and hyperdulia, a higher honor reserved for Mary.12 On this framework, invoking a saint’s prayers does not compete with Christ’s mediatorship because the saints are not treated as independent sources of grace. Robert Bellarmine, whose systematic defense of the practice Roman Catholic theologians relied on, held that the saints are not believers’ immediate intercessors with God, but that whatever they obtain for believers from God, they obtain through Christ, and that Scripture itself testifies the redeemed in heaven pray for those still on earth, at least in a general way.13 Thomas Aquinas’s underlying rationale is that asking a saint’s prayers is asking a fellow member of Christ’s body to intercede, the same request believers make of one another on earth, not a channel of grace running around Christ.8 On this view, addressing a saint directly, “Holy Peter, save me; open to me the gates of heaven,” is proper shorthand for asking Peter to obtain that grace from God, not a claim that Peter grants it himself.13

Objections and Responses

Doesn’t Rome’s own doctrine already deny that invoking the saints competes with Christ’s unique mediatorship, since the saints are said to obtain grace only through Christ? Charles Hodge answered that the verbal distinction does not settle what the practice itself does. However carefully theologians define the saints’ role, ordinary invocation asks them directly for things only God can give: “he says it is right to say: ‘Holy Peter, save me; open to me the gates of heaven; give me repentance, courage’… God alone can grant these blessings; the people are told to seek them at the hands of creatures. This is idolatry.”14 The practice, on his reading, further assumes the saints possess attributes Scripture reserves for God, hearing prayers addressed to them from everywhere at once and knowing the unspoken thoughts of those who pray: “this is to assume that they possess divine attributes.”14 And since no revelation establishes that the dead can hear the prayers of the living at all, Hodge held that the practice risks the very outcome the doctrine of Christ alone was framed to prevent, “turning their eyes and hearts from the one divine mediator between God and man, who ever lives to make intercession for us… to cisterns which can hold no water.”15

Related Doctrines

References

  1. The Second London Baptist Confession of Faith (1689), chap. 8, “Of Christ the Mediator,” para. 9. ↩ ↩2

  2. The Heidelberg Catechism (1563), Lord’s Day 11, Q&A 29-30. ↩ ↩2

  3. The Second London Baptist Confession of Faith (1689), chap. 8, “Of Christ the Mediator,” para. 1. ↩

  4. The Heidelberg Catechism (1563), Lord’s Day 12, Q&A 31. ↩

  5. John Gill, A Body of Doctrinal Divinity; or, A System of Evangelical Truths, Deduced from the Sacred Scriptures, 2 vols. (London: Printed for the Author, and Sold by George Keith, 1769), book 2, chap. 11, “Of Christ, the Mediator of the Covenant”: “we have a more sure word of prophecy to direct us in this matter; Christ is the one and only Mediator.” ↩

  6. Benedict Pictet, Christian Theology, trans. Frederick Reyroux (Philadelphia: Presbyterian Board of Publication, 1845), 269-270: “We infer also that Christ is our only mediator, as the apostle expressly tells us, ‘There is one mediator between God and men, the man Christ Jesus’… for no one can be a mediator of intercession, who is not also of redemption: these are the two parts of mediation, which are inseparable.” ↩

  7. Charles Hodge, Systematic Theology, Volume III (New York: Charles Scribner and Company, 1873), 283-285, “Mariolatry.” ↩ ↩2

  8. Thomas Aquinas, quoted in Hodge, Systematic Theology, 3:281: “Quanquam solus Deus sit orandus, ut vel gratiam vel gloriam nobis donet; sanctos nihilominus viros orare expedit, ut illorum precibus et meritis, nostrae orationes sortiantur effectum.” ↩ ↩2

  9. The Heidelberg Catechism (1563), Lord’s Day 34, Q&A 94. ↩

  10. The Second Helvetic Confession (1566), chap. 23, “Of the Prayers of the Church, of Singing, and of Canonical Hours.” ↩

  11. Council of Trent, Twenty-Fifth Session (1563), decree on the invocation, veneration, and relics of saints, quoted in Hodge, Systematic Theology, 3:280: “sanctos, una cum Christo regnantes, orationes suas pro hominibus Deo offerre; bonum, atque utile esse suppliciter eos invocare; et ob beneficia impetranda a Deo per filium ejus Jesus Christum, Dominum nostrum, qui solus noster redemptor et salvator est, ad eorum orationes, opem auxiliumque confugere… adversarique honori unius mediatoris Dei et hominum Jesu Christi… impie sentire.” ↩

  12. Hodge, Systematic Theology, 3:279-280: Romanists distinguish “the cultus civilis due to earthly superiors, douleia due to saints and angels; huperdouleia due to the Virgin Mary; and latreia due to God alone.” ↩

  13. Robert Bellarmine, quoted in Hodge, Systematic Theology, 3:280-281: “Sancti non sunt immediati intercessores nostri apud Deum, sed quidquid a Deo nobis impetrant, per Christum impetrant” [the saints are not our immediate intercessors with God, but whatever they obtain for us from God, they obtain through Christ]; “Sancti orant pro nobis saltem in genere, secundum Scripturas” [the saints pray for us, at least in general, according to the Scriptures]. ↩ ↩2

  14. Hodge, Systematic Theology, 3:281-282: “He says it is right to say: ‘Holy Peter, save me; open to me the gates of heaven; give me repentance, courage,’ etc. God alone can grant these blessings; the people are told to seek them at the hands of creatures. This is idolatry… this is to assume that they possess divine attributes.” ↩ ↩2

  15. Hodge, Systematic Theology, 3:282: “How fearful the consequences of turning their eyes and hearts from the one divine mediator between God and man, who ever lives to make intercession for us… It is turning from the fountain of living waters, to cisterns which can hold no water.” ↩