Petros B. Vassiliadis (; born 1945) is a Greek biblical scholar and Professor Emeritus of the Department of Theology of the Aristotle University of Thessaloniki (AUTh), honorary president of the Center of Ecumenical, Missiological and Environmental Studies “Metropolitan Panteleimon Papageorgiou” (CEMES) and the World Conference of Associations and Theological Institutions and Educators (WOCATI).

Biography Vassiliadis was born in Thessaloniki on August 6, 1945.

Education Vassiliadis pursued undergraduate studies in Theology and Mathematics in AUTh, and post-graduate studies in Biblical Criticism and Biblical Theology at British (King's College London) and German (Heidelberg) universities. Vassiliadis studied at the University of Athens, where he submitted his doctoral dissertation entitled On the Hypothesis of the Q-Document. A Critical Consideration of Current Literary and Theological Problems of the Q-Document (1977).

Teaching Petros Vassiliadis started his academic career by serving as an assistant to the late professor Savvas Agouridis (1974-1977) at the Theological School of the University of Athens.

He then moved to his home town, Thessaloniki, where he was elected lecturer in 1982, assistant professor in 1983, associate professor in 1985, and full professor in 1989, at the Department of Theology of the Aristotle University of Thessaloniki. There he taught for almost 35 years New Testament and Interfaith dialogue, being also assigned for some time the courses of Missiology, Liturgics and Ecumenical Dialogue. He also taught as a visiting professor at various institutions, universities and colleges of USA (St. Vladimir's, St. Athanasius, Smith College, Lynchburg), of Europe (Bossey, Bologna Bari, Ravenna, Copenhagen, Lund, Oslo, Joensuu, Reykiavik), and Asia (South Korea).

Vassiliadis supervised more than 17 master and 10 doctoral dissertations (promoting, in addition to the traditional, the sociological, feminist and other contemporary exegetical methods of biblical analysis), but also of missiological, ecumenical and liturgical character.

Career He was for many years the departmental coordinator of the Erasmus/Socrates program of inter-university cooperation of the European Union. From 1986 he is co-editor of the Greek biblical series “Hermeneia of the New Testament” (ΕΚΔ) and “Bibliotheca Biblica” (ΒΒ), editor of the ecumenical series “Ecclesia-Koinonia-Oecumene” (ΕΚΟ), and of the CEMES series, editor-in-chief for East and South Europe of the “International Studies in Formative Christianity and Judaism” of the University of South Florida, and editor of the Great Orthodox Christian Encyclopedia (Μεγάλη Ορθόδοξη Χριστιανική Εγκυκλοπαίδεια, MOXE) in its early stages.

He also served as an Orthodox commissioner of CWME of the WCC (1998-2006), and chief organizer of the 14th World Mission Conference, officially hosted on his recommendation by the Church of Greece in Athens (2005), for the first time in an Orthodox setting. He was coordinator of the Biblical Studies in the 12th World Mission Conference in San Antonio, Texas of USA (1989), and the 8th General Assembly in Harare, Zimbabwe (1998). In addition, he served in various Synodical Committees of the Church of Greece (of Liturgical Renewal, and of Inter-Orthodox and Inter-Christian Relations), consultant of the United Bible Societies for the improvement of the relations with the Orthodox Churches and the presentation of the Orthodox understanding of the Bible to the global family of the Bible Societies, institutional coordinator of the Forum Mediterraneum, dealing with issues pertinent to faith, history of religions, and cultural anthropological research on the three monotheistic religions of the Mediterranean sea, and member of the editorial committee of the Orthodox biblical journal Δελτίο Βιβλικών Μελετών (Bulletin of Biblical Studies) of the “Artos Zoes” foundation, and of the Regnum Edinburgh 2010 Mission Series of the Oxford Center of Mission Studies.

He is Honorary President of the WOCATI, a founding member, secretary, and vice-president of the Society for Ecumenical Studies and Inter-Orthodox Relations (SESIOR), founding member, first secretary, and now president of the CEMES, member of the Q International Project of the Society of Biblical Literature, as well as of the Studiorum Novi Testamenti Societas (SNTS), and among the coordinators of the regular conferences of Eastern and Western N.T. Scholars. He was one of the main contributors of the Inter-Christian Symposia of the Department of Theology of the Aristotle University of Thessaloniki and the Pontifical University Antonianum of Rome, and a close friend of the ecumenical monastic community of Bose in Italy.

Together with his colleagues, professors S. Agouridis, G. Galitis, J. Karavidopoulos, B. Stoyannos and J. Galanis, he translated the New Testament into Modern Greek (1977-1989). He published, edited in Greek and English nearly 20 books, and 300 articles in scientific journals, conference proceedings, and collective volumes, as well as in the conventional and electronic press. He also participated in radio and television discussions, and gave numerous interviews on a variety of themes. He participated in more than 100 international conferences.

After his becoming an Emeritus Professor, and his being honored by his colleagues of the Department of Theology for his contribution to the ecumenical dialogue,Cf. Ο Οικουμενικός Διάλογος στον 21ο Αιώνα. Πραγματικότητες - Προκλήσεις - Προοπτικές: Τιμητικό Αφιέρωμα στον Ομότιμο Καθηγητή Πέτρο Βασιλειάδη. he was devoted to the establishment of the CEMES scientific foundation, directing as its president the projects on Ecumenical Dialogue,Cf. https://www.academia.edu/39951800 Inter-faith Dialogue,Ορθόδοξη προσέγγιση για μια θεολογία των θρησκειών, CEMES 5, Θεσσαλονίκη 2014. the Orthodox Mission,Cf. https://www.academia.edu/13305749, https://www.academia.edu/14257352, https://www.academia.edu/30303457, https://www.academia.edu/30303457, https://www.academia.edu/36237210. the Order of Deaconesses,Cf. https://www.academia.edu/30303457, https://www.academia.edu/4194067. the Holy and Great Council of the Orthodox Church,Cf. https://www.academia.edu/37540323, https://www.academia.edu/43198936. and the Ukrainian Autocephaly.Cf. https://www.academia.edu/37706882, https://www.academia.edu/52095409. He also set up and is directing the Inter-Orthodox, Inter-Jurisdictional Master Program in Orthodox Ecumenical Theology (ΜΟΕΤ).

Awards He was awarded with the highest honour of the municipality of Neapoli, Thessaloniki, for his contribution to the religious and cultural development of his home town, and also from the municipality of Edessa for his overall scientific contribution.

Contribution to theological education In 2002, after more than a decade in WOCATI, having also served as member of the executive committee, he was elected WOCATI's president (2002–2008), and for his contribution he was awarded for life the title of its honorary president. His scholarly contribution on the world ecumenical theological education is specified in combining the new challenges with the traditional Christian presuppositions.Cf. "The Importance of the Ecumenical Vision for Theological Education and Ecumenical Formation. Response," J. Pobee (ed.), Towards Viable Theological Education. Ecumenical Imperative, Catalyst of Renewal, WCC Publications: Geneva, 66-72; Petros Vassiliadis (ed.), Challenging Traditional Theological Education. 20 Years of WOCATI, Neapolis 2008; and “Theological Education in the Orthodox World”, Handbook of Theological Education in World Christianity. Theological Perspectives-Regional Surveys-Ecumenical Trends, Oxford 2010, 603–610. On the basis of his international experience and the nearly 40 years academic service in Greece he is one of the contributors to the revision of the religious course in the public secondary education (Lyceum) of his country, and a fervent supporter of the constitutional changes in Greek public higher education, and a member of the Association of Professors of the Aristotle University of Thessaloniki.Official website at syndesmosauth.gr .

Contributions

Biblical studies In the field of biblical literature his scholarly speciality was mainly the Sayings of the Historical Jesus, the Q-Document,Cf. his doctoral dissertation, Η περί της Πηγής των Λογίων θεωρία, Αθήνα 1977; LOGOI IESOU. Studies in Q, Atlanta 1999; Τα Λόγια του Ιησού. Το αρχαιότερο ευαγγέλιο, Athens 2005. the Pauline theology,Cf. Σταυρός και Σωτηρία, Thessaloniki 1983; Χάρις- Κοινωνία-Διακονία. Ο κοινωνικός χαρακτήρας του παύλειου προγράμματος της λογείας, Thessaloniki 1985; Παύλος: Τομές στη θεολογία του Α΄, Thessaloniki 2005. and the theology of Liturgy and Eucharist.Βιβλικές Ερμηνευτικές Μελέτες, Thessaloniki 1987; Επίκαιρα Αγιογραφικά Θέματα. Αγία Γραφή και Ευχαριστία, Thessaloniki 2000.

Ηis contribution to the Synoptic (Q) scholarship was mainly his widely accepted and used procedural principles for the reconstruction of the Q-DocumentCf. "The Nature and Extent of the Q-Document", Novum Testamentum 20 (1978) 49-73. and the consequences of the Q Hypothesis, not so much as a solution to the Synoptic Problem, but as a change of the conventional picture of Christian origins. With regard to the Pauline collection project, on the basis of a thorough examination of 2 Corinthians 8-9, he is among those specialized scholars who support the social character of this ancient radical institution of Christianity, the main purpose of which was the ideal of “equal distribution and permanent sharing of the material wealth.” As to the Pauline (and general New Testament) Theology his recommendation is a combination of historical and thematic approach of this discipline, with a parallel recognition and use of such semi- and extra-canonical texts and traditions, as Q and the Gospel of Thomas among others, suggesting what he calls a “Eucharistic Paradigm”.

Theology Although his primary scholarly profession is biblical, he has deliberately chosen to engage with the wider theological scholarship. With the decline of the word of God, the Gospel and the overall biblical foundation of the Orthodox theology, mainly as a result of the predominance of the institutional expression of the Church at the expense of her charismatic character, he attempted in many of his works a creative encounter between the later development of the ecclesiastical tradition and the modern theological problematic with the foundational biblical tradition. Realizing the fragmentation of contemporary theological scholarship, and wishing to overcome it, he extended his scholarly and practical engagement to other areas, such as ecumenical movement and theology, missiology, liturgical theology, and world theological education.

Among his characteristic theological propositions is the priority of the eschatological experience of the early Christian community over against its literary products (texts, Bible etc.), although from the time of St. Paul there has been a shift of the center of gravity from the (Eucharistic) experience to the (Christian) message, from eschatology to Christology (and further and consequently to soteriology), from the event (the Kingdom of God), to the bearer and center of this event (Christ, and more precisely his sacrifice on the cross). This basic theological positions of his, i.e. the priority of the horizontal (ecclesiological and eschatological) perspective, both in the N.T. and in the early Church, as well as in later Christian literature, with the vertical soteriological (Pauline?) teaching placed always within the framework of the horizontal eschatological as complementary, has determined his extra-biblical theological activity and research.