In the letter, addressed to one otherwise unknown Theodore (Theodoros), Clement says that "when Peter died a martyr, Mark Mark the Evangelist came over to Alexandria, bringing both his own notes and those of Peter, from which he transferred to his former book the Gospel of Mark the things suitable to whatever makes for progress toward knowledge." He further says that Mark left this extended version, known today as the Secret Gospel of Mark, "to the church in Alexandria, where it even yet is most carefully guarded, being read only to those who are being initiated into the great mysteries." Clement quotes two passages from this Secret Gospel of Mark, where Jesus in the longer passage is said to have raised a rich young man from the dead in Bethany, a story which shares many similarities with the story of the raising of Lazarus in the Gospel of John.