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At some point in the 1980s, bottled water suddenly became a big thing. Before that, it would have seemed absurd to say that bottled water was going to become a multi billion dollar industry. I mean, come on, Jeff. They probably would have said in their high powered boardroom, assuming the CEO was called Jeff. If people want to drink water, they've already got a tap for that, conveniently located in their very own home, and it's basically free. There's no way people are going to pay good money for a bottle of water any more than they pay $5 for a bottle of fresh air or, I don't know, $5 for a cup of coffee. But of course, Geoff was right, because this wasn't any ordinary bottle of water. This was mineral water, so called because it was full of healthy minerals, things like magnesium, calcium bicarbonate and sodium, and it had these things. Natur water was bottled directly at the source, a geologically and physically protected source. Not only that, but Jeff and friends gave this water a sophisticated, unpronounceable French name and then slapped a label on it that makes you feel like you're buying champagne rather than good old fashioned H2O. There is something to this, of course. I think all of us would much rather drink water from its pure source than drink that same water once it's travelled a long way downstream and pass through all sorts of potential impurities. Because actually by that stage, it really isn't the same water as the clean, refreshing water you find at the source. I don't own shares in mineral water, by the way. I'm saying this because go back to the source was a crucial slogan in the reformation of the church in the 16th century. The Latin phrase the Reformers used was ad fontes, ad meaning to the and fontes meaning fountainhead. So it was sort of a rallying cry to the fountainhead. They borrowed it from Renaissance humanism, which encouraged people to get back to the study of classic Greek and Latin literature. What the Reformers meant was, let's get back to the Bible. Scripture is the source, the fountainhead of all true wisdom, because it alone is God's word. The traditions and Christian teaching of others since then could of course contain much that was valuable too. But unlike the purity of God's Word, which is without error, traditions could contain impurities. When the Reformers talked about going back to God's Word, they were specifically talking about God's Word in the original languages. Because once Scripture has been translated, there's always the possibility that poor translation choices can lead to doctrinal errors. That's what they believed had happened with the Latin Vulgate edition of the Bible, which was the church's official bible in the 16th century, translated into Latin in the 4th century. Ironically enough, the phrase ad fontes actually appears in the Vulgate in Psalm 42, which talks about a deer thirsting for a source of water as the soul thirsts for God. Reformers like William Tyndale and Martin Luther had that same thirst. They weren't content to read someone else's Latin translation of God's Word. They wanted to get as close as possible to what was originally written, and that meant going back to the Greek and Hebrew sources. Once they'd done that, they wanted to produce more accurate translations, not just into Latin, but also into languages that the person on the street could understand. That way, even everyday folks could get closer to the source themselves and be less vulnerable to the doctrinal impurities that had crept in over the centuries.
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The spiritual effect of Ad Fontes is incalculable. Erasmus published his Greek and Latin New Testament in 1516, and only a year later, Luther posted his explosive 95 theses, the very first of which challenged the Vulgate's mistaken translation of the Greek word for repentance, a poor translation that had.
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Produced much confusion regarding the doctrine of.
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Justification by faith in the medieval church.
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And then, just a few years after that, Luther published the New Testament in German, and Tyndale did the same for readers of English, all driven by the desire to allow people, all people, regardless of status, to get closer to the pure source of all wisdom without it being polluted by the faulty translation or faulty teaching of others.
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Jesus himself and the Apostle Paul taught the same principle of returning to Scripture in order to keep ourselves as free from error as possible. Jesus, who spoke of himself as giving living water to those who listen, told his hearers at one point, you are wrong because you do not know the Scriptures. And Luke commends people who verified Paul's teaching by examining the Scriptures daily to see if these things were true.
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Ad Fontes ought to be our rallying cry, too. Today we're blessed by excellent translations of the original Greek and Hebrew manuscripts of God's Word. It's easier than ever for us to go back to the source. Sadly, though, many of us are very happy to listen to God's Word being preached by others, or read books about God's Word, or listen to podcasts about God's Word, while at the same time never actually going to the Source ourselves. How much time do we spend in any given week actually drinking from the source. Let's return ad fontes and drink deeply from the source to see whether the things we're being taught are true. I'm Barry Cooper, and this has been, Simply Put, a podcast from Ligonier Ministries. Discover more@simplyputpodcast.com Ligonier creates resources to help Christians know what they believe, why they believe it, how to live it, and how to share it. You can find these resources@ligonier.org.
Host: Barry Cooper (on behalf of Ligonier Ministries)
Episode Date: December 16, 2025
Episode Theme:
This episode of Simply Put breaks down the meaning and importance of the phrase "Ad Fontes"—a rallying cry of the Reformation that means "to the sources." Barry Cooper explains how the Reformers' call to return to Scripture’s pure, original sources was vital then, and remains essential for today’s believers. Using the analogy of bottled mineral water, Cooper demonstrates why Christians must go back to the Bible itself rather than rely solely on second-hand interpretations.
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This episode encourages listeners to prioritize Scripture itself—the true "source"—over accumulated traditions, translations, or teachings. The Reformers' urgent plea, "ad fontes," remains vital. As Barry Cooper challenges, let’s “drink deeply from the source” and ensure our beliefs are truly rooted in God’s Word.