The story of the discovery of Codex Sinaiticus in 1844 at Saint Catherine’s Monastery by Constantin von Tischendorf is detailed here by Dr. Daniel B. Wallace of the Center for the Study of New Testament Manuscripts (CSNTM). Codex Sinaiticus is a 4th century manuscript that is the oldest complete copy of the New Testament in any language available in the world today. This manuscript is now housed at the British Library and can be viewed in its entirety online.