This is worth considering when we encounter the relationship between the Greek mystērion and the Latin sacramentum. It raises a question I would like to explore with my Catholic friends: how much of our theological system belongs to the biblical text, and how much have we brought back to it?
In Ephesians 5, Paul reflects on marriage through the union of Christ and the church. Husband and wife become one flesh, and that relationship points toward something greater. Verse 32 calls it a great mystērion. The Latin Vulgate renders this with sacramentum. The Catholic bishops’ own modern English Bible uses “mystery.” Its notes explain marriage here as a reflection of the intimate relationship between Christ and the church. (bible.usccb.org)
Does this mean that the Latin translation was simply wrong?
That would be too easy. We must ask what sacramentum meant when it was used, rather than assume it already carried every feature of later Catholic teaching. The Catechism itself acknowledges that mystērion was translated into Latin by both mysterium and sacramentum. It then explains how, in later usage, sacramentum emphasized the visible sign of the hidden reality of salvation. The development in meaning is openly recognized. (catholicculture.org)
Nor can we make Jerome responsible for inventing sacramental Christianity. Tertullian already spoke of baptism in sacramental terms before Jerome. The history is older and more complicated than the story of a translator making one consequential mistake. (newadvent.org)
But this qualification leaves a serious question standing.
A translation cannot, by itself, establish everything that later theology attaches to its vocabulary.
Ephesians 5 does not enumerate seven sacraments or explain the full institutional structure through which they would later be administered. Its immediate concern is the love of Christ and the life of the community that belongs to him. Whatever further theological conclusions we draw require an argument. They cannot simply be extracted from the Latin word.
A Catholic reader may reasonably answer that doctrine develops through the church’s sustained reading of Scripture and its living tradition. That is where the conversation becomes meaningful. We can then examine whether a particular development remains faithful to the witness it claims to unfold.
My concern is what happens when the direction of interpretation is reversed: when we begin with an established system, encounter its familiar vocabulary in a translation, and treat that familiarity as proof that the entire system was present from the beginning.
Christians of every tradition can do this. We become so accustomed to our doctrinal language that we stop hearing the questions Scripture asks of it. Our explanations become difficult to distinguish from the text itself.
For me, the pastoral question is whether our teaching keeps us attentive to Christ. In Ephesians 5, husbands are called to a love measured by his self-giving. The passage places a demanding claim upon our lives before it supplies material for our theological classifications.
I want to ask how faithfully our structures serve that claim. Do they help us receive and embody the love being revealed? Are we willing to let Scripture examine the authority we exercise in its name?
The movement from mystērion to sacramentum offers a useful place to begin. It invites us to examine how words acquire authority, how interpretations become settled, and how easily inherited conclusions can come to seem self-evident.
This brings me back to A. W. Tozer’s reflection on “The Sacrament of Living,” which I have explored in my own writing. In the final chapter of The Pursuit of God, Tozer challenges our habit of dividing life into sacred and secular compartments. His starting point is Christ himself. Jesus lived an undivided life before the Father, and through him our ordinary activities can become expressions of our consecration to God.
I read this alongside A. B. Simpson’s emphasis on union with Christ. The grace we receive takes visible form in how we work, welcome a stranger, keep a promise, or remain beside someone who is suffering. Christ dwells in us by the Spirit, and our lives become witnesses to his presence. Contemplation flows into service; communion with God shapes our relationships.
This is what I mean by a sacramental life: inward grace finding outward expression through the whole person. It brings me to Romans 12:1–2, where we offer our bodies as a living sacrifice and submit ourselves to the renewing of our minds. Our bodies, our time, our relationships, and our daily responsibilities belong within that offering.
Here the question reaches every church, including my own. Do our structures help us live our whole existence before God? Do they teach us to recognize Christ’s claim upon us in the kitchen, the workshop, the office, and the room of someone who is dying? Does what we celebrate together become visible in how we live?
That is a conversation I want to have with my Catholic friends. We may disagree about sacramental authority and doctrinal development, but we can examine together whether our teaching and practice faithfully bear witness to Christ.
The mystery belongs to God. We receive it with gratitude and allow it to judge our lives, including the systems through which we seek to explain it. And as Christ makes his home in us, the grace we confess becomes something our neighbors can encounter.







