Bart D. Ehrman is the James A. Gray Distinguished Professor at the University of North Carolina (UNC) at Chapel Hill. He came to UNC in 1988, after four years of teaching at Rutgers University. At UNC he has served as both the Director of Graduate Studies and the Chair of the Department of Religious Studies. A graduate of Wheaton College (Illinois), Professor Ehrman received both his Masters of Divinity and PhD from Princeton Theological Seminary, where his 1985 doctoral dissertation was awarded magna cum laude. Since then he has published extensively in the fields of New Testament and Early Christianity, having written or edited 21 books, numerous scholarly articles, and dozens of book reviews. Among his most recent books are a Greek-English edition of The Apostolic Fathers for the Loeb Classical Library (Harvard University Press), an assessment of the newly discovered Gospel of Judas (Oxford University Press), and two New York Times bestsellers: God’s Problem (an assessment of the biblical views of suffering) and Misquoting Jesus (an overview of the changes found in the surviving copies of the New Testament and of the scribes who produced them). Among his fields of scholarly expertise are the historical Jesus, the early Christian apocrypha, the apostolic fathers, and the manuscript tradition of the New Testament. Professor Ehrman has served as President of the Southeast Region of the Society of Biblical literature, chair of the New Testament textual criticism section of the Society, book review editor of the Journal of Biblical Literature, and editor of the monograph series The New Testament in the Greek Fathers (Scholars Press). He currently serves as coeditor of the series New Testament Tools, Studies, and Documents (E.J. Brill), coeditor in chief for the journal Vigiliae Christianae, and on several other editorial boards for journals and monographs in the field. Winner of numerous university awards and grants, Professor Ehrman is the recipient of the 1993 UNC Undergraduate Student Teaching Award, the 1994 Phillip and Ruth Hettleman Prize for Artistic and Scholarly Achievement, and the Bowman and Gordon Gray Award for excellence in teaching. Professor Ehrman has two children, a daughter, Kelly, and a son, Derek. He is married to Sarah Beckwith (PhD, King's College London), Marcello Lotti Professor of English at Duke University. He lives in Durham, North Carolina.

Neither Clement's birthdate or birthplace is known with any degree of certainty. It is conjectured that he was born in around 150. According to Epiphanius Scholasticus, he was born in Athens, but there is also a tradition of an Alexandrian birth. His parents were pagans, and Clement was a convert to Christianity. In the Protrepticus he displays an extensive knowledge of Greek mythology and mystery religions, which could only have arisen from the practise of his family's religion. Having rejected paganism as a young man due to its perceived moral corruption, he travelled in Greece, Asia Minor, Palestine and Egypt. Clement's journeys were primarily a religious undertaking. In Greece, he encountered an Ionian theologian, who has been identified as Athenagoras of Athens; while in the east, he was taught by an Assyrian, sometimes identified with Tatian, and a Jew, who was possibly Theophilus of Caesarea. In around 180, Clement reached Alexandria, where he met Pantaenus, who taught at the Catechetical School of Alexandria. Eusebius suggests that Pantaenus was the head of the school, but it is controversial whether the institutions of the school were formalized in this way before the time of Origen. Proponents of a formalized leadership and succession suggest that Clement succeeded Pantaenus as leader of the school, and was succeeded himself by Origen. Clement studied under Pantaenus, and was ordained to the priesthood by Pope Julian before 189. Otherwise, virtually nothing is known of Clement's life in Alexandria. He may have been married, a conjecture supported by his writings. Clement's diet is also unknown, but he said some things that look down upon eating flesh such as, "It is good...neither to eat flesh" and that even the fumes from cooked flesh "darken the soul"; however he said non-vegetarians aren't sinning except in certain circumstances such as those who eat flesh with "gluttony" and he was not opposed to all instances of eating meat. During the Severian persecutions of 202–203, Clement left Alexandria. In 211, Alexander of Jerusalem wrote a letter commending him to the Church of Antioch, which may imply that Clement was living in in Cappadocia at that time. The date and location of his death are unknown.