If you've ever tried to line up Bible history with secular history, you've probably run into a puzzling snag: the numbers don't seem to match up. One of the most interesting examples of this involves the Great Pyramid of Giza and the story of Noah's Flood. Depending on which dates you use, it looks like the pyramids might have been built before the Flood — which raises an obvious question, since the pyramids show no evidence of ever being underwater.
Let's walk through the puzzle, and then look at where the Bible itself — through its different ancient manuscript traditions — offers a way to resolve it.
Dating the Flood from the Genealogies
Many creation scientists date biblical events using the genealogies recorded in Genesis, which list how old each patriarch was when his son was born. For example:
"Enoch lived sixty-five years, and became the father of Methuselah." (Genesis 5:21)
By adding up these ages generation by generation, back through Adam, and forward through Noah, scholars have traditionally calculated that the Flood occurred somewhere around 2350 BC (this is close to the famous 2348 BC date proposed by Archbishop James Ussher in the 17th century).
The Pyramid Problem
Here's where things get tricky. Egyptologists generally date the construction of the Great Pyramid of Giza to around 2550 BC — roughly two hundred years before the traditional Flood date.
That's a real problem, because:
- The pyramids show no signs of water damage from a global flood.
- The pyramids are built directly on sedimentary bedrock, the kind of stable geological foundation you'd expect for a structure raised well after any catastrophic flooding — not one that predates it.
- The Bible itself tells us that Egypt was named after Mizraim, a grandson of Noah through his son Ham:
"The sons of Ham: Cush, and Mizraim, and Phut, and Canaan." (Genesis 10:6)
Since Mizraim was born after the Flood, and Egypt (Mizraim) is traditionally understood as the civilization that built the pyramids, it stands to reason the pyramids were built after the Flood too — not before it. So something in the dating has to give. Either the 2350 BC Flood date is off, or the traditional narrative is wrong somewhere. As it turns out, the issue may lie not with the biblical text itself, but with which ancient copy of the biblical text we're using.
Three Ancient Witnesses to the Old Testament
Most modern English Bibles are translated primarily from the Hebrew Masoretic Text (MT) — a Hebrew text meticulously copied and preserved by Jewish scribes called the Masoretes, working in Tiberias between the 7th and 9th centuries AD. It is an extraordinarily careful and reliable textual tradition, but it isn't the only ancient witness we have.
Two other important sources exist:
- The Greek Septuagint (LXX) — a translation of the Hebrew Scriptures into Greek, completed around 250 BC, over a thousand years before the Masoretic Text was finalized. Because it's a translation, the Septuagint reflects an even older underlying Hebrew manuscript, one that is no longer available to us today.
- The Samaritan Pentateuch (SP) — an independent Hebrew textual tradition preserved by the Samaritan community, also apparently drawn from an older source text.
Remarkably, when it comes to certain chronological details, the Septuagint and the Samaritan Pentateuch often agree with each other — and disagree with the later Masoretic Text.
Exhibit A: The 430 Years in Egypt
Consider Exodus 12:40. In the Masoretic Text (and most English translations, following it), the verse simply says the Israelites were in Egypt 430 years. But the Septuagint reads differently:
"And the sojourning of the children of Israel, while they sojourned in the land of Egypt and the land of Canaan, was four hundred and thirty years." (Exodus 12:40, Septuagint)
Notice the extra phrase — "and the land of Canaan." The Masoretic Text drops it. This isn't a minor detail: it changes whether the 430 years covers the whole patriarchal period (starting with Abraham's arrival in Canaan) or just the time actually spent in Egypt.
Interestingly, the apostle Paul seems to follow the longer chronology as well, counting the 430 years from the promise given to Abraham, not from Jacob's arrival in Egypt:
"And this I say, that the covenant, that was confirmed before of God in Christ, the law, which was four hundred and thirty years after, cannot disannul." (Galatians 3:17)
The first-century Jewish historian Flavius Josephus records the same longer timeframe as well. So we have three independent witnesses — the Septuagint, Paul, and Josephus — all pointing to a reading that the later Masoretic Text does not preserve.
Exhibit B: The Genesis 11 Genealogies
The differences go deeper still. Genesis 11 records the genealogy from Shem down to Abraham, and here the Masoretic Text and the Septuagint diverge dramatically — not just in wording, but in actual numbers.
Take Genesis 11:12, describing Arphaxad's son:
"And Arphaxad lived five and thirty years, and begat Salah." (Genesis 11:12, KJV — following the Masoretic Text)
Compare that to the same verse in the Septuagint:
"And Arphaxad lived a hundred and thirty-five years, and begot Cainan."
That's a full hundred-year difference — and the Septuagint even includes an additional patriarch, Cainan, who doesn't appear at all in the Masoretic genealogy. This pattern repeats itself throughout the chapter. Here's how the two traditions compare:
| Patriarch | Age at son's birth (Masoretic Text) | Age at son's birth (Septuagint) |
|---|---|---|
| Arphaxad | 35 | 135 |
| Salah | 30 | 130 |
| Eber | 34 | 134 |
| Peleg | 30 | 130 |
| Reu | 32 | 132 |
| Serug | 30 | 130 |
| Nahor | 29 | 79 |
In almost every case, the Septuagint adds exactly 100 years to the patriarch's age — with Nahor's case adding 50 years instead. And it isn't just the Septuagint: the Samaritan Pentateuch and Josephus largely follow the same longer chronology. (Read the concerned chapter of Genesis in the Septuagint here https://www.ellopos.net/elpenor/physis/septuagint-genesis/11.asp?pg=2)
Why This Matters for the Flood Date
These extra years matter more than they might first appear. If we follow the Masoretic Text's shorter chronology, Shem — Noah's son, who according to Genesis lived 600 years — would still have been alive when Abraham was a grown man, and would have outlived several of his own descendants listed in the genealogy, including Serug. That's a strange result, and it's one reason many scholars suspect something has shifted in the transmission of the shorter text.
Add up the extra years the Septuagint preserves across the genealogy — roughly 600 additional years in total, factoring in the larger 50-year gap at Nahor — and the timeline shifts substantially. Instead of landing around 2350 BC, the Flood would land closer to 3000 BC.
That extra 550–650 years is exactly what's needed to solve the pyramid puzzle. It gives enough time after the Flood for:
- Noah's descendants to repopulate the earth,
- the nations to disperse at the Tower of Babel,
- and a stable civilization to arise in Egypt and undertake a project as massive as the Great Pyramid — all comfortably before 2550 BC, not after it.
As a marker for the Babel dispersal, Genesis actually names it directly. Peleg's name literally means "divided":
"And unto Eber were born two sons: the name of one was Peleg; for in his days was the earth divided..." (Genesis 10:25)
Josephus also connects the very word "Hebrew" to Eber, Peleg's father — suggesting Eber's descendants carried this name with them through the dispersion at Babel.
So Why the Discrepancy?
This naturally raises a question: if the longer Septuagint chronology fits the archaeological evidence so well, why does the Masoretic Text — the very text most of our modern Bibles are translated from — record the shorter one?
Scholars don't fully agree on the answer, and it's worth being honest that there is more than one explanation on the table.
Some textual critics see this simply as the kind of variation that naturally creeps into ancient manuscripts across a thousand years of hand-copying and translation — numbers are especially vulnerable to scribal slips, since they were sometimes represented by letters or symbols that could easily be miscopied or later "rounded" for various reasons, in either direction.
A more provocative theory, held by some Christian apologists, suggests the shortening was deliberate — allegedly tied to a rabbinic dispute over the book of Hebrews' portrayal of Jesus as a High Priest in the order of Melchizedek, rather than the order of Levi:
"For this Melchisedec... without father, without mother, without descent, having neither beginning of days, nor end of life; but made like unto the Son of God; abideth a priest continually." (Hebrews 7:1,3)
Under this theory, some later Jewish tradition identified Melchizedek with Shem, and had a motive to keep Shem alive well into Abraham's lifetime — to argue that a priestly line could be traced from Shem through Abraham, Isaac, Jacob, and Levi, sidestepping Hebrews' claim that Jesus's priesthood came through an older, fatherless order altogether. Shortening the genealogy by roughly a hundred years per generation, the theory goes, would achieve exactly that.
It's an intriguing theory, but it's important to say plainly: this is a minority, contested view, not a finding accepted by mainstream Jewish or Christian textual scholars, and there's no direct manuscript evidence of any such coordinated effort. Most specialists in Old Testament textual criticism — Jewish and Christian alike — treat the Masoretic/Septuagint numerical differences as a genuine, complex puzzle in the history of the text's transmission, without assuming any particular group's ill intent. The honest answer is that we don't know for certain why the numbers differ; we only know that they do, and that the Septuagint's longer numbers happen to fit the archaeological timeline for the pyramids more comfortably.
Fittingly, Paul himself seems to have had a personal aversion to exactly this kind of genealogical rabbit-hole, regardless of which side of a dispute it served:
"...or to devote themselves to myths and endless genealogies. Such things promote controversial speculations rather than advancing God's work — which is by faith." (1 Timothy 1:4, NIV)
"But avoid foolish controversies and genealogies and arguments and quarrels about the law, because these are unprofitable and useless." (Titus 3:9, NIV)
Where That Leaves Us
Working with the Septuagint's longer chronology, the Flood likely occurred around 3000 BC, giving roughly 550 years of post-Flood history before the Great Pyramid was raised — plenty of time for the earth to be repopulated, for Babel's nations to scatter, and for Mizraim's descendants to build one of the ancient world's most enduring monuments. Under this same longer framework, some young-earth creationists arrive at a total age for the earth of around 6,500–7,000 years, rather than the roughly 6,000 years often quoted from Ussher-style Masoretic-based chronologies.
None of this is meant to settle every question — chronology in Genesis is a genuinely difficult and debated area, even among Bible-believing scholars, and mainstream archaeology and geology operate on very different timescales altogether. But it is a good reminder that our English Bibles rest on a rich, layered manuscript history, and that comparing these ancient witnesses to one another — rather than assuming any single text is beyond question — is exactly the kind of work that careful biblical scholarship has always done.