Codex Sinaiticus Rescriptus

Codex Sinaiticus Rescriptus, mostly originating in Saint Catherine's Monastery, Sinai, is a collection of nineteen Christian Palestinian Aramaic palimpsest manuscripts containing Old Testament, Gospel and Epistles pericopes of diverse Lectionaries, among them two witnesses of the Old Jerusalem Lectionary, various unidentified homilies along with two by John Chrysostom, hagiographic texts such as the Life of Pachomios, the Martyrdom of Philemon Martyrs, and the Catecheses by Cyril of Jerusalem. The palimpsests manuscripts are recycled parchment material that were erased and reused by the tenth-century Georgian scribe Ioane-Zosime for overwriting them with homilies and a Iadgari (979–980 AD).

Source: Wikipedia — Codex Sinaiticus Rescriptus (CC BY-SA 4.0)