Christians United Despite Evolution Disagreements
Christian unity does not require uniformity of opinion on every question, including matters of natural history like biological origins. The church has historically distinguished between doctrines essential to the faith and secondary matters where believers may legitimately differ without fracturing fellowship.
Essential vs. Secondary Doctrines
Calvin articulated this principle clearly: some truths "are so necessary to be known, that all must hold them to be fixed and undoubted as the proper essentials of religion: for instance, that God is one, that Christ is God, and the Son of God, that our salvation depends on the mercy of God, and the like." Yet other matters "are the subject of controversy among the churches" without destroying "the unity of the faith" [2]. This framework allows Christians to hold firm convictions on core doctrines while extending charity on questions where Scripture does not speak with the same clarity or emphasis.
The question of how God brought about biological diversity falls into this secondary category. While Christians universally affirm God as Creator and the authority of Scripture, the mechanisms and timeline of creation have been debated throughout church history without threatening orthodoxy. What unites believers is not agreement on every interpretive question but shared commitment to Christ himself and the gospel of salvation by grace.
The Biblical Basis for Unity
Paul's exhortation to the Corinthians addresses precisely this tension between diversity and unity: he beseeches them "by the name of our Lord Jesus" to "speak the same thing" and avoid divisions [7]. Yet this call to unity centers on the person and work of Christ, not on achieving identical positions on every theological or scientific question. The Philippian church likewise contained believers who differed on various matters, yet Paul urged them toward the common ground: "This is what they are agreed in, that Christ is a Christian" and that they set "their hearts upon another world" [3].
Jesus himself prayed for unity among his followers "that they all may be one, as thou, Father, art in me, and I in thee" [1]. This unity is grounded in the indwelling Spirit, not in uniformity of opinion on matters peripheral to the gospel. The "living unity" Christ envisions knits believers together through their shared participation in the divine life, not through identical conclusions on every interpretive question.
Historical Precedent for Diversity
The early church faced this challenge from its inception. Origen noted that critics observed how Christians "at first were few in number, and held the same opinions; but when they grew to be a great multitude, they were divided and separated" on various points [5]. Yet these differences did not prevent the church from maintaining unity on essential doctrines like the Trinity, the Incarnation, and salvation through Christ alone.
The apostles themselves "recognize no future for the Jews in which the Gentile Christians are not to participate," demonstrating that unity in Christ transcends even profound ethnic and theological differences [4]. If the early church could maintain fellowship across the Jew-Gentile divide—arguably the most contentious issue of the apostolic age—contemporary Christians can certainly extend the same grace across disagreements about natural history.
Practical Implications
Adam Clarke's commentary on the disciples' fishing expedition offers a pointed application: "Had not these been called in to assist, the net must have been broken, and all the fish lost." He laments that "envious separation among the different sects" prevents cooperation in gospel work, noting that "some will rather leave souls to perish than admit of partners in the sacred work" [6]. This warning applies equally to divisions over secondary matters like evolutionary mechanisms.
The church's mission requires believers to distinguish between hills worth dying on and questions where humility and patience serve the gospel better than dogmatism. Christians united in affirming God's creative sovereignty, human dignity as image-bearers, the historicity of the Fall, and Christ's redemptive work can cooperate in witness and worship even while holding different views on the scientific details of origins.
Sources
- John (Presbyterian) “Jamieson, Fausset & Brown on John 17:21: that they all may be one, as thou, Father, art in me, and I in thee, that they may be one in us--The indwelling Spirit of the Father and the Son is the one perfect bond of union, knitting up into a living unity, first all believers amongst themselves; next, this unity into one still higher, with the Father and the Son. (Observe, that Christ never mixes Himself up with His disciples as He associates Himself with the Father, but says I in THEM and THEY in US). that the world may believe that thou hast sent me--sentest me. So the grand impression upon th”
- CCEL (Reformed) “John Calvin, Institutes of the Christian Religion, section 83: are so necessary to be known, that all must hold them to be fixed and undoubted as the proper essentials of religion: for instance, that God is one, that Christ is God, and the Son of God, that our salvation depends on the mercy of God, and the like. Others, again, which are the subject of controversy among the churches, do not destroy the unity of the faith; for why should it be regarded as a ground of dissension between churches, if one, without any spirit of contention or perverseness in dogmatising, hold that the soul on quitti”
- Philippians (Nonconformist/Puritan) “Matthew Henry on Philippians 3:15: The apostle, having proposed himself as an example, urges the Philippians to follow it. Let the same mind be in us which was in blessed Paul. We see here how he was minded; let us be like-minded, and set our hearts upon Christ and heaven, as he did. 1. He shows that this was the thing wherein all good Christians were agreed, to make Christ all in all, and set their hearts upon another world. This is that whereto we have all attained. However good Christians may differ in their sentiments about other things, this is what they are agreed in, that Christ is a Ch”
- CCEL (Reformed (Old Princeton)) “Charles Hodge, Systematic Theology, Vol. 3, section 88: that if there be any difference between them, it is not in virtue of national or social distinctions, but solely of individual character and devotion. That we are all one in Christ Jesus, is a doctrine 811 which precludes the possibility of the preeminence assigned to the Jews in the theory of which their restoration to their own land, and their national individuality are constituent elements. 5. The Apostles uniformly acted on this principle. They recognize no future for the Jews in which the Gentile Christians are not to participate. As”
- Schaff ANF/NPNF (Patristic) “ANF Vol 4: Tertullian IV, Minucius Felix, Commodian, Origen — CHAP. X.: But observe what he alleges as a proof of his statement: "Christians at first were few in number, and held the same opinions; but when they grew to be a great multitude, they were divided and separated, each wishing to have his own individual party:[4] for this was their object from the beginning." That Christians at first were few in number, in comparison with the multitudes who subsequently became Christian, is undoubted; and yet, all things considered, they were not so very few.[5] For what stirred up the envy of the Je”
- Luke (Methodist/Wesleyan) “Adam Clarke on Luke 5:7: They beckoned unto their partners - Had not these been called in to assist, the net must have been broken, and all the fish lost. What a pity there should be such envious separation among the different sects that profess to believe in Christ Jesus! Did they help each other in the spirit of Christian fellowship, more souls would be brought to the knowledge of the truth. Some will rather leave souls to perish than admit of partners in the sacred work. It is an intolerable pride to think nothing well done but what we do ourselves; and a diabolic envy to be afraid lest oth”
- 1 Corinthians (Methodist/Wesleyan) “Adam Clarke on 1 Corinthians 1:10: Now I beseech you, brethren - The apostle having finished his introduction comes to his second point, exhorting them to abstain from dissensions, that they might be of the same heart and mind, striving together for the hope of the Gospel. By the name of our Lord Jesus - By his authority, and in his place; and on account of your infinite obligations to his mercy in calling you into such a state of salvation. That ye all speak the same thing - If they did not agree exactly in opinion on every subject, they might, notwithstanding, agree in the words which they u”