What sustains a contemporary Christian marriage?
In Part 1, I explored C. S. Lewis’s four kinds of human love, arguing that each flourishes when received as a finite good, shaped by mutuality and respect, and transformed by divine love into generous, courageous and non-possessive relationships. In Part 2, I proposed that compatibility, commitment, companionship and character (the “four Cs”) work together across all four loves to strengthen their flourishing, durability and effectiveness. In Part 3, I suggested that Christian marriage is a covenantal vocation in which affection, friendship, erotic love and charity are sustained through the “four Cs” as two people learn imperfectly and repeatedly to practise faithful love and to give and receive grace.
In Part 4, I argue that Christian marriage requires adaptive fidelity: an enduring covenant expressed through attention, negotiation and growth as spouses, bodies, families, circumstances and convictions change over time. Marriage flourishes when two distinct persons cultivate intimacy, companionship, justice, shared faith and purpose.
Adaptive fidelity
Christian marriage is not sustained simply by the intensity of affection with which it begins, nor by compatibility, good intentions, or even commitment considered in isolation. Marriage unfolds through time, and time changes both the circumstances of a relationship and the persons who inhabit it. Bodies age, convictions develop and adapt, careers alter, children arrive and eventually leave, parents become dependent, friendships change, losses accumulate, and possibilities once imagined may disappear while unexpected ones emerge. The central question is therefore not merely what makes a good marriage, but what enables love to remain faithful amid change.
Christian covenant provides continuity within this changing landscape, but covenant should not be confused with immobility. The promise remains while the persons who make and receive that promise continue to develop. Faithfulness therefore requires what might be called adaptive fidelity: the capacity to honour enduring commitments while learning how those commitments must be embodied under new conditions.
A sustainable Christian marriage is one in which two people learn repeatedly how to love one another in the changing context of the marriage over time.
Inheritance and identity
No person enters marriage without a history. Families of origin shape assumptions about affection, money, conflict, authority, religion, work, hospitality, gender roles, parenting, emotional expression, responsibility, and the appropriate boundaries between individuals and families. Cultural and social expectations further influence what people imagine marriage should be. Many of these patterns are acquired implicitly and remain largely invisible until they encounter a different set of assumptions within the intimacy of married life.
Marriage requires both gratitude and critical reflection on what has been inherited. Some practices deserve preservation because they embody wisdom, generosity, stability, or care; others require modification or rejection because they perpetuate dysfunction, inequality, fear, or unrealistic expectations. The task is not to abandon personal history but to create a household that honours what is good within both histories without remaining captive to either. This requires explicit conversation, since what appears natural or self-evident to one spouse may appear unfamiliar, irrational, or even hurtful to the other.
Marriage also requires a mature balance between belonging and personal differentiation. Christian language concerning two becoming “one flesh” should not be interpreted as the disappearance of individuality, conscience, vocation, friendship, privacy, or moral agency. Intimacy does not require fusion. A healthy marriage allows each spouse to remain a distinct person before God, capable of growth, disagreement, independent judgment, appropriate friendships, and the establishment of legitimate boundaries.
Such differentiation is not the enemy of commitment but one of its conditions. Mutuality becomes difficult where one spouse must surrender identity in order to preserve harmony or where difference is interpreted as disloyalty. The goal is an interdependence in which two persons share a life without effacing either person. Christian marriage joins two persons in covenant but does not abolish their separate personhood.
Intimacy, attention, and companionship
Communication is one of the ordinary disciplines by which marital intimacy is sustained. It involves more than exchanging information or resolving disputes. Spouses remain connected by asking questions, listening attentively, communicating needs, expressing gratitude, sharing disappointments, and permitting themselves to be known. One danger of a long marriage is the assumption that familiarity eliminates the need for curiosity.
This matters because neither spouse remains exactly the person whom the other originally married. Beliefs develop, interests emerge, bodies change, ambitions are revised, disappointments leave their mark, and new possibilities appear. Marital fidelity therefore includes the continuing discipline of discovering the person to whom one has already made a promise. Attention is itself a form of love because it communicates that the other remains worthy of interest rather than merely familiar.
Sexual intimacy belongs within this wider ecology of attention and embodied affection. Christian accounts of marriage should neither idealise sexuality nor treat it with embarrassment. Sexual love may include desire, pleasure, tenderness, touch, vulnerability, communication, exclusivity, mutuality, and consent. It is one significant way in which spouses may experience and express embodied intimacy, but its forms and intensity inevitably change through the course of a marriage.
Pregnancy, childbirth, infertility, menopause, ageing, disability, illness, medication, psychological stress, exhaustion, and differences in libido may substantially alter sexual relationships. Faithfulness therefore cannot be measured by conformity to a single model of sexual flourishing. It requires patience, honesty, generosity, respect, and the willingness to discover forms of intimacy appropriate to changing circumstances. Christian fidelity is embodied fidelity: spouses love not abstract personalities but persons whose bodies are vulnerable to time and change.
Friendship and delight are equally important. Most marriages do not flourish indefinitely as functional arrangements for managing children, employment, finances, domestic tasks, and appointments. Shared meals, conversation, humour, recreation, travel, hospitality, hobbies, celebrations, and periods of unhurried companionship help preserve the friendship within marriage.
At the same time, not every interest needs to be shared. Healthy companionship allows sufficient independence for each spouse to remain a developing and interesting person.
Christian discussions of marriage sometimes emphasise duty, sacrifice, forgiveness, and perseverance while saying too little about enjoyment. Yet delight is itself a good. Affection, laughter, pleasure, playfulness, beauty, and shared enjoyment do not trivialise covenant; they help sustain it. Marriage is not merely an obligation to be fulfilled but, at its best, a good to be gratefully enjoyed.
Attention in a digital age
Contemporary marriage also exists within an economy increasingly organised around the capture of attention. Smartphones, social media, streaming services, online gaming, remote work, constant messaging, pornography, and the expectation of continuous availability create forms of distraction that previous generations encountered differently or not at all. Digital technologies can enrich relationships, but they can also erode the sustained attention upon which intimacy depends.
Couples therefore need to negotiate practices concerning devices, work communication, social media, online privacy, pornography, entertainment, and the boundaries between public and private life. The deeper issue is not simply the quantity of “screen time” but the direction of attention. A marriage may be weakened without any dramatic betrayal when the attention once available to a spouse is gradually dispersed among innumerable competing demands.
This problem illustrates a broader principle. Love requires presence, and presence cannot be indefinitely divided without consequence. To give another person sustained attention is to give something of one’s finite life. Contemporary Christian marriage therefore requires intentional practices that protect conversation, intimacy, rest, worship, meals, and shared experience from forms of distraction designed to colonise them.
Children, parenting, and the household
The arrival of children intensifies many assumptions inherited from families of origin. Questions concerning discipline, education, technology, faith formation, boundaries, affection, parental authority, and domestic responsibility often expose convictions that had previously remained implicit. Parenting requires sustained collaboration. Spouses need sufficient coherence to provide stability while retaining the capacity to revise judgments, acknowledge mistakes, and live constructively with differences.
Children also bring changes to the internal structure of a marriage. Time, energy, money, intimacy, employment, leisure, sleep, and household responsibilities all require renegotiation. A healthy marriage does not treat children as interruptions to the couple’s relationship, but neither does it permit parenting to become the couple’s entire identity. Spouses remain persons and partners as well as parents, and the marriage itself requires continuing attention if it is not gradually to become a joint management project.
Financial life similarly reveals values, fears, priorities, habits, and structures of power. Openness concerning income, debt, spending, saving, generosity, risk, financial obligations, and long-term goals is therefore an important dimension of trust. Money is never merely technical. Decisions about its acquisition and use disclose assumptions about security, freedom, status, responsibility, generosity, and the future.
The same applies to work and vocation. Careers and forms of service make legitimate claims upon individuals, but they consume time, energy, and attention that inevitably affect marriage. Decisions concerning employment, unpaid labour, caregiving, relocation, ambition, professional development, and retirement should therefore be understood relationally rather than exclusively individually.
Domestic labour likewise possesses moral significance. Cooking, cleaning, shopping, planning, organising, remembering appointments, caring for children, maintaining social relationships, and supporting elderly relatives all contribute to shared life. Justice within marriage is expressed partly through whether these visible and invisible burdens are recognised and distributed fairly. Fairness, however, need not always mean numerical equality; circumstances, abilities, working arrangements, illness, and caregiving responsibilities may legitimately produce different contributions at different times.
Faith, vocation, and shared purpose
A shared Christian faith provides marriage with a profound source of unity, but the reality of such unity is the result of diligence, cooperation, and enlightened compromise. Worship, prayer, Scripture, service, hospitality, participation in Christian community, and common ethical commitments may constitute a shared spiritual world. These practices locate a marriage within a broader context, reminding spouses that neither the relationship nor the other person should be expected to bear the weight of ultimate meaning.
Not all marriages, however, possess identical religious commitments. Marriages may cross denominational, theological, cultural, or religious boundaries, and such differences require careful rather than dismissive attention. Couples need to consider how faith will shape worship, ethical decisions, family traditions, parenting, religious festivals, community participation, and the spiritual character of the household. Unity does not require pretending that substantial differences are insignificant. It requires learning how conviction, respect, freedom, and conscience can coexist without coercion.
A sustainable marriage also needs some conception of shared purpose. Couples are shaped by the stories they tell about where they have come from, but they are also sustained by their capacity to imagine a future together. Questions about the kind of household they hope to create, the values they wish to embody, the contribution they hope to make, and the forms that hospitality, generosity, vocation, service, and eventually retirement might take can give direction to shared life.
This prevents Christian marriage from becoming merely an exercise in successful relationship maintenance. The goal is not simply to keep two people together but to ask what their common life might become for God and neighbour. Marriage may then become generative beyond biological parenthood, creating deeper friendship, hospitality, service, care, generosity, and forms of belonging from which others also benefit.
A healthy and sustainable marriage is a profound blessing for the couple and their family; it is also one of the greatest social goods.
Rev Dr Rod Benson is General Secretary of the NSW Ecumenical Council and a minister of the Uniting Church in Australia serving at North Rocks Community Church in Sydney.
Image source: author.
Taking it further….
Reflection questions
- How does the article understand the relationship between marital unity and personal differentiation? Why might maintaining individuality, conscience, vocation and legitimate boundaries actually strengthen rather than weaken a marriage?
- Why does the author describe attention as a form of love? How are curiosity, communication, sexual intimacy, friendship and delight related to the continuing discovery of one’s spouse over time?
- What makes Christian marriage distinctively Christian? How do shared faith, worship, vocation and purpose locate marriage within a larger commitment to God, neighbour and community
Application questions
- How might a couple practise intentional attention in a digital age? Identify two or three realistic practices that could protect conversation, intimacy, shared meals, worship, recreation or rest from unnecessary distraction.
- How can justice and mutuality be embodied in the ordinary organisation of a household? Consider money, paid employment, caregiving, parenting, domestic work and the often invisible mental labour involved in maintaining shared life.
- Complete this sentence individually, and then discuss it with your spouse or group: “We hope our shared life will contribute to our service of God and neighbour by …” What concrete practices of hospitality, generosity, service, friendship, care or community participation might turn that aspiration into a sustainable pattern of life?
All Told 