The Bible’s reliabilityDraft · awaiting advisor review
Hasn’t the Bible been changed over the centuries?
In short
We have far more copies of the New Testament, and far earlier ones, than of any other book from the ancient world, and comparing them shows what was written with a high degree of confidence. Where copies differ, modern Bibles say so openly, and none of the differences overturns a central Christian belief.
The Objection
The Bible was copied by hand for about 1,400 years, by scribes who made mistakes and sometimes made deliberate changes. Not one original manuscript survives. How can anyone claim to know what the authors actually wrote?
Put as its strongest advocates would put it.
The Christian Case
- Historical evidence
More than 5,000 Greek manuscripts of the New Testament survive, in whole or in part, along with early translations into Latin, Syriac and Coptic and many quotations in early Christian writers. The earliest fragments come from the second century. Most ancient works survive in a handful of copies made many centuries after they were written.
- Historical evidence
Because copies spread widely and early, no single person or council could control the text. Scholars compare the copies to work out the original wording, the same method used for every ancient book.
- Historical evidence
Most differences are spelling, word order or obvious slips. A small number matter, and modern Bibles show them: the ending of Mark and the account of the woman caught in adultery are marked as absent from the earliest manuscripts.
- Historical evidence
For the Old Testament, the Great Isaiah Scroll from Qumran, copied in the second century BC, is about a thousand years older than the oldest complete Hebrew Bibles known before it was found, and it matches them closely. Two tiny silver scrolls from about 600 BC carry the priestly blessing of Numbers 6.
- Scripture
Christians trust that God, who spoke through the prophets and apostles, has kept his word for his people. That is a belief held by faith; the evidence above is what anyone can check.
- Christians differ
Christians describe the Bible’s accuracy in different ways. Many affirm that the original writings were without error (inerrancy); others prefer to say the Bible is fully reliable in all it teaches. Both accept the manuscript evidence described here.
Where the Evidence Is Weaker
We don’t have the original documents, and a few passages remain genuinely uncertain. Manuscript counts include many small fragments, and most complete copies are medieval. Confidence comes from how early and how widely the copies agree, not from any single perfect manuscript.
Arguments to Avoid
- Saying there are “no differences” between manuscripts, or quoting a precise percentage of certainty as if it had been measured.
- Comparing manuscript totals with other ancient books without mentioning that most New Testament copies are medieval.
- Treating the wording of one translation, such as the KJV, as the original where earlier manuscripts differ.
Read for Yourself
Isaiah 40:8
The grass withereth, the flower fadeth: but the word of our God shall stand for ever.
Luke 1:1–4
1Forasmuch as many have taken in hand to set forth in order a declaration of those things which are most surely believed among us, 2Even as they delivered them unto us, which from the beginning were eyewitnesses, and ministers of the word; 3It seemed good to me also, having had perfect understanding of all things from the very first, to write unto thee in order, most excellent Theophilus, 4That thou mightest know the certainty of those things, wherein thou hast been instructed.
2 Timothy 3:16–17
16All scripture is given by inspiration of God, and is profitable for doctrine, for reproof, for correction, for instruction in righteousness: 17That the man of God may be perfect, throughly furnished unto all good works.
Related Finds
Great Isaiah Scroll (Dead Sea Scrolls)
c. 125 BC · Found: Qumran Cave 1, 1947
Shrine of the Book, Israel Museum, Jerusalem
A complete scroll of Isaiah.
What it shows
About a thousand years older than the previous oldest Hebrew manuscripts, yet very close to them: strong evidence that Isaiah was copied with care.
What it doesn’t show
There are many small differences, mostly spelling, and some variant readings.
Ketef Hinnom silver scrolls
Late 7th or early 6th century BC · Found: Burial caves at Ketef Hinnom, Jerusalem, 1979
Israel Museum, Jerusalem
Two tiny rolled silver amulets inscribed in Hebrew.
What it shows
They carry the priestly blessing, “The LORD bless you and keep you…”: the oldest known text of words that are also in the Bible.
What it doesn’t show
Their wording differs slightly from Numbers, and a minority of scholars date them later.
Further Reading
- The Text of the New Testament (4th edition) · Bruce M. Metzger and Bart D. Ehrman (2005)The standard introduction.
- Can We Trust the Gospels? · Peter J. Williams (2018)
- The Dead Sea Scrolls Today · James C. VanderKam (2010)
Drafted with Opened AI and awaiting review by Opened’s apologetics advisors. Labels show the kind of support each point has: Scripture is what the Bible says; historical evidence and philosophical arguments can be checked by anyone; “Christians differ” marks questions on which faithful Christians disagree.
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