 According to an Arabic note on the reverse of the first volume of the manuscript , the manuscript was written by the hand of Thecla , the martyr , a notable lady of Egypt , a little later than the Council of Nice ( A.D. 325 ) . Tregelles made another suggestion , the New Testament volume has long been mutilated , and begins now in the twenty @-@ fifth chapter of Matthew , in which chapter the lesson for Thecla 's Day stands . " We cannot be sure how the story arose . It may be that the manuscript was written in a monastery dedicated to Thecla . " Tregelles thought that Thecla 's name might have on this account been written in the margin above , which has been cut off , and that therefore the Egyptians imagined that Thecla had written it . Cyril Lucaris believed in Thecla 's authorship , but the codex cannot be older than from late 4th century . 
