Pseudepigrapha are texts which are attributed to people who did not actually author the document. This was usually done to give the document more credibility by using the name of a prominent person. In biblical studies, the pseudepigrapha is a collection of Jewish religious works thought to be written between 300BC and 300AD.
Discovered in 1945, the Gospel of Thomas is part of the Nag Hammadi library of manuscripts. Also known as the Coptic Gospel of Thomas, it is a collection of 114 supposedly secret sayings of Jesus.