Codex Sinaiticus is one of the most famous surviving biblical manuscripts in the world. Produced in Greek during the fourth century, it preserves large portions of the Old Testament and a complete New Testament, making it an important witness to the early history of the Christian biblical text.
What Is a Codex?
A codex is an early book form made of pages bound together, unlike a scroll that is rolled. Early Christians adopted the codex extensively, and manuscripts such as Codex Sinaiticus show how substantial collections of biblical books could be gathered into book form.
How Old Is It?
Codex Sinaiticus is generally dated to the fourth century AD. That places it many centuries closer to the composition of the New Testament books than medieval manuscripts and makes it especially valuable for textual comparison.
What Does It Contain?
The manuscript preserves the New Testament and significant portions of the Greek Old Testament, along with some early Christian writings. Its contents also provide evidence for studying the history of how Christian communities collected and transmitted sacred texts.
Why Do Scholars Compare It?
Sinaiticus is not treated as automatically correct simply because it is old. Scholars compare it with other Greek manuscripts, ancient translations, quotations, and textual traditions. Where manuscripts differ, age is one factor among several used to evaluate the evidence.
This is the same basic reason discoveries such as the Dead Sea Scrolls are so valuable: surviving manuscripts give researchers evidence that can be compared rather than leaving the history of the text to speculation.
A Manuscript With Its Own History
The modern history of Codex Sinaiticus involves discoveries associated with Saint Catherine’s Monastery at Sinai and the eventual dispersal of leaves among several institutions. Portions are now preserved in major collections, and digitization has made much of the manuscript accessible for study.
Codex Sinaiticus matters not because a single manuscript determines the Bible, but because it is one important piece in a much larger body of evidence documenting how the biblical text traveled through history.
Continue Exploring Biblical Manuscripts
Visit Scripturestead Manuscripts for the growing manuscript library, or continue with our overview of the Dead Sea Scrolls and why they matter.