I'm studying the book of Isaiah at the moment and have been trying to understand the prophecy of the reign of Cyrus from Isaiah 45-52.

Here's a sample that refers to him:

Cyrus, God’s Instrument

Thus says the Lord to his anointed, to Cyrus, whose right hand I have grasped, to subdue nations before him and to loose the belts of kings, to open doors before him that gates may not be closed. (Isaiah 45:1)

I have read claims that Isaiah was written after the reign of King Cyrus, which are usually based on the dead sea scrolls being the latest manuscripts available for Isaiah.

How do people defend the veracity of the prophecy being made in Isaiah?


2 Answers 2


Prima Facie evidence

The primary evidence is that the text claims to have been written by Isaiah the son of Amoz, and that his career spanned portions of the reigns of Kings Uzziah, Jotham, Ahaz, and Hezekiah (see Isaiah 1:1), putting us in the 8th century BC.

The secondary evidence is that Jesus and His apostles quoted the words of Isaiah and exhibit the belief that Isaiah wrote them.

The tertiary evidence is that 100% of the extant manuscript evidence supports Isaiah as a unified work, rather than a set of separate texts that were later compiled.

Against this unanimous set of evidence the question might be restated, what evidence is there that the text wasn't written by Isaiah ben Amoz around the 8th century BC?


Competing views

Dead Sea Scrolls

I suggest the Dead Sea Scrolls work against the multiple-Isaiahs/late Isaiah theories:

  • They show that although the Jewish scribes weren't 100% perfect, they were exceptionally meticulous in accurately copying their sacred texts
  • The Great Isaiah scroll is not claimed by anyone to be the original manuscript--it's a copy of a copy of copy etc...so the fact that the earliest surviving manuscript is not from the 8th century BC says nothing about when the original was written. Very nearly all Greco-Roman writings, some of which are considered very historically reliable, come to us through copies made centuries after the originals were composed
  • The Great Isaiah scroll has essentially the entire book of Isaiah - it's one work attributed to one author, not three works stitched together


Those who assume the impossibility of supernatural prophecy will naturally (no pun intended)(okay, maybe it was) assert that a statement that refers to King Cyrus of Persia by name (6th century BC) could not have been written until after the fact. This is a circular argument--it treats what it wants to prove as an axiom and then claims it is therefore true. I offer a more extensive critique of this argument on my channel here.

We could assume in advance--before even looking at the evidence--that Isaiah could not be a prophetic document, but this is neither scientific nor is it an argument--it is a philosophical assertion.

Subject Matter

The Book of Isaiah can be divided into (at least) 3 sections--one of the most popular descriptions is:

  • The Assyria section (chapters 1-35)
  • The history section (chapters 36-39)
  • The Babylon section (chapters 40-66)

Other subdivisions exist, but this is a pretty good generic outline.

The argument goes that the subject matter is so different in the "Babylon" section versus the "Assyria" section that this must be the work of different people. On closer inspection, however, there are multiple possibilities here--let's focus on the two simplest:

  1. These are different authors who each always wrote about the same things.
  2. This is one author who has written on several topics, and has organized his book by grouping the material by topic. (a writer & poet of this caliber was clearly well-read, and probably had thoughts on multiple topics)

The Occam's razor approach would be option 2, which does not multiply entities beyond necessity. For those who hold to option 1, I am quite curious whether they would apply the same source-critical reasoning to all books that are organized by subject matter...must they all be the products of multiple authors as well?



The preponderance of the evidence supports the view that Isaiah was a highly-literate author living in the 8th-century BC, and that the full book of Isaiah is his work.

This view has been unpopular in academic circles for the last few centuries, because it is at odds with naturalism. Those who prefer to accept naturalism without question must reject traditional authorship of Isaiah regardless of the evidence.

  • My understanding is one of the dead sea Isaiah scrolls radiocarbon dates to a BC date. Answer could stand a citation to it.
    – Joshua
    Commented Mar 17, 2022 at 19:33
  • @Joshua citation added relative to the Great Isaiah scroll. Commented Mar 18, 2022 at 2:39
  • 2
    Thanks @HoldToTheRod - really impressed with your wisdom on this issue and will certainly share it with others.
    – Oliver K
    Commented Mar 19, 2022 at 2:24
  • 1
    It is nice to know that we already had credible arguments in favor of the text's credibility, even before finding the fragment of Isaiah's broken seal as the other answer explains. These are the traditional defenses we held prior to that, knowing that this is what got us here is invaluable!
    – Jesse
    Commented Mar 20, 2022 at 4:18
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    Just saw this. Nice and concise (no poem intended). Just finished looking at the video that you referenced, debunking "synoptic" prophecy critique, also ....nice and concise. You now have a 15th!! upvote. Commented Mar 22, 2022 at 10:44

From biblicalarchaeology.org

Just south of the Temple Mount, in the Ophel excavations, archaeologist Eilat Mazar and her team have discovered a small seal impression that reads “[belonging] to Isaiah nvy.” The upper portion of the impression is missing, and its left side is damaged. Reconstructing a few Hebrew letters in this damaged area would cause the impression to read, “[belonging] to Isaiah the prophet.”

Isaiah's seal has quite possibly been found alongside other officials from Hezekiah's reign. It's broken, but would correspond to finding a seal saying Isai- proph-.

Its design appears to be unique among the set of seals found; the others follow a very consistent format.

  • That's a good point, thanks for contributing!!
    – Oliver K
    Commented Mar 18, 2022 at 0:10
  • Nice addition to the accepted answer. Upvoted + 1. Commented Mar 22, 2022 at 10:47

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