Codex Sinaiticus is one of the most celebrated and important books in the world. Handwritten well over 1,600 years ago, it contains the Christian Bible in Greek, including the oldest surviving complete copy of the New Testament. Originally discovered at St. Catherine's Monastery at the foot of Mount Sinai, its surviving leaves are now preserved across four libraries worldwide, with the largest portion held at the British Library.

This 5th-century Greek papyrus is a fascinating 'palimpsest'—a recycled document where original text was washed away so the expensive papyrus could be reused. The front side contains a unique anthology of wisdom literature, including passages from Ecclesiastes, the Song of Songs, and the book of Sirach. It provides a rare glimpse into what may have been an early Christian educational text or coursebook.