Christianity inherited the marriage practices of the Hellenistic Mediterranean and the Jewish diaspora, ran them through several centuries of theological argument about whether marriage was good at all, and emerged in the medieval West with a script that would, over the next thousand years, become one of the most consequential cultural exports in human history. The script went something like this: marriage is between one man and one woman, freely chosen, indissoluble, sacramental, ordered toward procreation and mutual help, blessed by the church, and morally subordinate to celibate religious life but indispensable for the laity. Each element of the script was hammered out in argument, sometimes bloody. Each element was later contested, sometimes overturned, by Reformers, Enlightenment thinkers, romantic poets, feminists, and the lived experience of Christians who often did not match the script at all.
The earliest Christian writings are ambivalent. Paul preferred celibacy and tolerated marriage as a concession to weakness (1 Corinthians 7). Jesus' words on divorce, recorded variously in the Synoptic Gospels, hardened a strand of Jewish practice into a rule that would later define Christian marriage law for two millennia. The Patristic period intensified the ambivalence. Tertullian, Augustine, Jerome all wrote at length about marriage as a lesser good than virginity, a remedy for concupiscence rather than a positive vocation. The contradiction at the heart of Christian marriage, that it is honorable yet inferior to celibacy, would not be resolved until the Reformation and arguably never has been.
The medieval Catholic Church slowly built the institutional architecture. The Fourth Lateran Council in 1215 required public banns. The Council of Trent in 1563 made the priest's presence necessary for valid marriage, breaking the ancient tradition of clandestine consent-only marriages. Canon lawyers worked out the doctrines of impediments, consanguinity rules, dispensations, and the indissolubility doctrine that made annulment rather than divorce the only legitimate exit. John Witte Jr.'s history traces this slow construction through the patristic, Catholic sacramental, Lutheran social, Calvinist covenantal, Anglican commonwealth, and Enlightenment contractual models, each a re-revision of the previous script.
The Reformation reopened nearly every question. Luther rejected marriage as a sacrament and treated it as a worldly institution governed by civil authority while still divinely ordered. He allowed clerical marriage and recognized divorce on limited grounds. Calvin tightened the moral discipline and made marriage a covenant under both church and magistrate. The Anglicans split the difference. The Council of Trent re-tightened the Catholic doctrine in response, and the two streams diverged for four centuries until twentieth-century ecumenism began to bring them back into conversation. Stephanie Coontz's account shows how the Reformation also began the long shift from arranged marriage toward chosen marriage, from kin-property marriage toward companionate marriage, that would culminate in the romantic-bourgeois ideal of the nineteenth century.
The script went global through the missions. Spanish Catholicism imposed the Tridentine model on the Americas, the Philippines, and parts of Asia. Protestant missions from the eighteenth century exported the companionate Anglo-Saxon version to Africa, Oceania, India, and East Asia. The encounter with polygynous, matrilineal, and sexually fluid local practices forced Christianity to articulate its script more explicitly and to police it more aggressively. The colonial-missionary alliance, sometimes complicit, sometimes conflicted, produced the layered marriage systems that still structure family law across most of the Global South.
The romantic lens, Law 5 (Revise), then asks what has been revised since. The answer is: nearly everything except the rhetorical insistence on continuity. Catholic teaching on contraception (Humanae Vitae, 1968) split lay practice from official doctrine across the Western world. Mainline Protestant denominations recognized divorce, then women's ordination, then in many cases same-sex marriage. The Episcopal Church, the United Church of Christ, the Evangelical Lutheran Church in America, the Presbyterian Church (USA), the United Methodist Church (after long conflict), and most Anglican provinces in the Global North have changed the script. The Catholic Church, the Orthodox communions, and most Global South Protestant denominations have not. The result is a Christianity that no longer speaks with one voice on marriage and probably never did, but now openly acknowledges the disagreement.
Two further revisions are worth naming. The first is the recovery of a more honest history. John Witte's work has shown how the "traditional Christian marriage" defended in contemporary culture wars is mostly the nineteenth-century bourgeois version, not the patristic, medieval, or Reformation original. Don Browning's marriage and modernization project recognized that Christian marriage was being globally reshaped by capitalism, individualism, and feminism more than by any theological argument, and that the church's task was to engage rather than to denounce. The second is the post-colonial Christian voice, especially African and Asian, that is now actively rewriting the marriage script from outside the Western lineage, sometimes more conservatively than the West and sometimes in unexpected directions.
To read Christianity and the marriage script through the collective lens of revision is to see a two-thousand-year argument that has produced not a single script but a library, all called Christian, all contradicting each other on points that the contestants treated as fundamental. The current arguments about gender, sexuality, and family in global Christianity are not departures from a stable tradition; they are the latest chapter in an unstable tradition that has always been revising itself, sometimes admitting it, often denying it.