In every other language, a translation of scripture is a translation. In Greek it is a return. The New Testament was written in Greek, and a Greek speaker reading your captions may recognise the very word Paul used, sitting there in a modern sentence. That is an extraordinary advantage and a quiet trap, because some of those words still exist and have drifted in the meantime.
Greek has been written continuously for a very long time, which sounds like a curiosity until you realise what it does to a sermon.
The Greek of the New Testament is not classical Greek. It is Koine, the common Greek of the eastern Mediterranean in the first century, the language of merchants and soldiers and letters home. That is part of why the epistles read the way they do: they were written in the ordinary language of ordinary people, not in a high literary register.
Modern Greek is descended from it directly, without a break. A Greek speaker today cannot simply read Koine, any more than an English speaker can simply read Chaucer, but the relationship is far closer than between English and its ancestors. Roots, endings and whole words survive.
Greece also spent a long time arguing about which form of its own language should be the official one, a formal literary version or the everyday spoken one. The dispute ran through the nineteenth and twentieth centuries and reached into churches and courts. Feelings ran high enough that in 1901 the publication of a Gospel translation into the everyday language set off riots in Athens. The everyday form was made the official language of the state in 1976, and that is the Greek people read now.
Why this matters on a Sunday. The Greek in your captions is the modern everyday language, which is what your guest reads without effort. But the words a sermon needs, grace, spirit, flesh, repentance, are the ones the argument was fought over, and they carry both histories at once.
Because for once, the original and the local language are the same language at two different ages.
The Greek Old Testament, the Septuagint, was already in use when the New Testament was written, and many of the quotations in the epistles follow it. So the vocabulary a Greek speaker meets in scripture has been settling for longer than most languages have existed.
In Greek Orthodox worship the original text is read aloud, not a translation of it. Modern Greek translations exist and are widely used for study and in Protestant congregations, among them a nineteenth century version associated with Neophytos Vamvas. Which one a person is used to depends on their tradition, and it is not a question a host church should try to settle at the door.
What all of this means practically is simple. A Greek listener has a standard in their head, and it is a high one. They are not judging whether the sentence is accurate. They are judging whether it reached for the word scripture uses.
A Greek speaker recognises the New Testament word instantly. The danger is the ones whose everyday centre of gravity has moved since.
The New Testament word for grace survives into modern Greek, where it also does the everyday work of a favour, a charm, and the phrase for "thanks to". A translation drifting towards the conversational sense produces a sentence about somebody doing you a good turn, in a passage about salvation.
The same word carries the Holy Spirit and, in ordinary modern use, mind, wit and the life of the intellect. The related adjective in everyday Greek often means intellectual rather than spiritual. Only the capital letter and the surrounding sentence keep them apart.
In the epistles it is a gathering of people. In modern Greek it is the church, the building and the institution. Both are correct, and a listener will read the second unless the sentence around it makes the first clear. That is a translation problem no dictionary can solve.
Words that must never be interpreted at all, your church's name, your people's names, your own vocabulary, belong in Keywords, where they survive intact into Greek and into every other language in the room.
Unedited output from the same translation path a live room uses, run on 2026-08-06 from a Danish sermon script, eight target languages at once. Both lines land on the New Testament word.
Omskærelsen er ikke den ydre på kroppen, men hjertets omskærelse ved Ånden.
Romans 2, in Danish
Taken literally the Danish word lands in a hospital, and modern Greek has clinical vocabulary available for a tool to reach for. In a passage whose entire argument is that the outward thing is not the thing, a clinical rendering does not just read oddly. It argues the opposite of the text.
Η περιτομή δεν είναι το εξωτερικό στο σώμα, αλλά η περιτομή της καρδιάς δια του Πνεύματος.
Περιτομή is the New Testament word itself, the one standing in Romans 2. And δια του Πνεύματος uses an older preposition that survives in Greek precisely in religious phrasing. A Greek reader will not experience that sentence as a translation of a Danish sermon. They will experience it as scripture.
Og Ånden faldt over dem alle sammen, og de begyndte at tale på andre sprog.
Acts 2, in Danish
The Danish word carries all three, and only the sermon around it decides which. On Pentecost Sunday a wrong guess is not a small blemish. It goes out to every language in the room at the same moment, and nobody present can tell you it happened.
Και το Πνεύμα ήρθε πάνω σε όλους τους και άρχισαν να μιλούν σε άλλες γλώσσες.
Το Πνεύμα, capitalised, so it is the Spirit and not a mood. And γλώσσες, the word behind every English sentence about speaking in tongues, used here in its plain modern sense of languages. The sentence is simultaneously ordinary Greek and the vocabulary of Acts 2.
Both lines came out of the production translation path, not a demonstration built for the website. How it chooses: Smart Translation.
All three directions are live today.
A Greek speaker can preach in Greek and the room follows in its own languages. Greek is one of the 81 languages that can be the source.
Greek text on a guest's own phone, with the accent marks intact. No app, no account, nothing to install.
A Greek voice in one earbud, male or female, chosen by the listener rather than assigned to them.
MulingStream works with 183 languages. 80 can be spoken from the stage, 182 can be read as captions, 81 can be heard as a voice. Adding a language never changes what a gathering costs.
The last one is a practical warning about captions.
The alphabet on your screen is why Europe writes vowels.
An old borrowing The Greek alphabet was the first widely used writing system to give vowels their own letters, and the Latin alphabet this page is set in descends from it. When your caption switches from Latin letters to Greek ones, it is switching between cousins.
Half your church vocabulary is already Greek.
Words you use every week Church, bishop, baptism, apostle, evangelist, angel, martyr, liturgy, eucharist. Every one of them is a Greek word that travelled into other European languages and stayed. Your Greek guest is not learning your vocabulary. They are hearing theirs come home.
One small mark changes the word.
The accent Modern Greek replaced an older and more elaborate set of marks with a single accent, adopted in 1982. It is not decoration: it tells a reader which syllable is stressed, and moving it can change what a word means. Our captions carry it, at every screen size.
Modern Greek, which is what people in your room actually read. Where a sermon calls for the scriptural word, it reaches for the scriptural word, and in Greek that is very often the New Testament word itself, sitting in an ordinary modern sentence. The two lines above show exactly that.
It follows the register of what is being said rather than adopting a tradition. If particular phrasing matters to you, put it in Keywords and it arrives unchanged. And if you are reading a passage aloud, share it beforehand with Context Enhancer, which is worth more in Greek than in almost any other language.
Some can, to a degree, and some enjoy doing so. That is not the same as following a live sermon in a language they do not speak. The captions are for the sermon, not for the scripture reading, and most of what a preacher says on a Sunday is not a Bible verse.
Yes, at every screen size. Greek accents change meaning rather than just looking correct, so stripping them to save space is not an option we take.
Yes. Greek is one of the languages that can be the source, and it runs exactly the same way pointed in that direction.
Each has a hook of its own. The rest of the 183 are a row in the table.
See all 183 languages, with what each one can do.
He will tell you in one sentence whether the words are right, and he will be correct.