Youakim Moubarac was born in Kfarsghab, Zgharta, Lebanon in a Maronite family of long sacerdotal tradition. His Father, Antoun, and Grandfather, Youssef, were Maronite priests serving their community in one of the holiest locations of the Eastern Christianity in the Middle East, the Qadisha Valley. His maternal grandfather Nemtallah Samia was also a priest.
He participated between 1962 and 1965 in the Second Vatican Council within the Maronite delegation. After 1965, he dedicated himself to his work of promotion of the Interfaith dialogue, of defense of the Palestinian and especially Lebanese causes from 1975.
From 1985, Father Youakim worked on the rediscovering of the spiritual Syriac roots of the Maronite Church. Between 1987 and 1992, he settled in Lebanon and was in charge of preparing for a MaroniteSynod.[2]
During this period, and despite an intensive work on the Synod preparation and many spiritual and political missions, Moubarac started two important projects:
In 1989, he started the restoration of the Monastery of Our Lady of Qannoubine, a historical Maronite Monastery in the Qadisha valley which was for centuries the See of the Maronite Patriarch (ca. 15th to 18th Century).
In 1992, he founded with some friends, The Lebanese Cooperative for Development, a microcredit initiative, whose objectives were to encourage the displaced families during the Lebanese Civil War (1975–1990) to settle back in their region of origin and to prevent emigration outside Lebanon.
In 1991, the decision of Pope John Paul II to convene a Synod in Rome for all Catholic Lebanese Churches cancelled his project.
In 1992, he settled back in Paris where he resumed his academic work.
Youakim Moubarac left important works, large parts of which remain unpublished. In 2005 and 2006, two books were published with some of his previously unpublished works:
Georges Corm (2004), Youakim Moubarac, Un homme d'exception, Librairie Orientale, Beirut, ISBN978-9953-17-014-5
Dossier dirigé par Jean Stassinet (2005), Youakim Moubarac, Editions L'Age d'Homme, Lausanne, ISBN978-2-8251-1965-5
1956, Bibliographie de Louis Massignon. Réunie et classée par Y. Moubarac, Institut Français de Damas, Damascus. OCLC61507397
1956, Les Noms divins dans le Coran et en épigraphie sud-sémitique, Museon, Louvain.
1957, Les Études d'épigraphie sud-sémitique et la naissance de l'Islam : Eléments de bibliographie et lignes de recherches, Librairie orientaliste Paul Geuthner, OCLC60506136
1958, Abraham dans le Coran, Editions J. Vrin, Paris. OCLC1325821
1963, Anthologie de la littérature arabe, selon une nouvelle translittération établie par le Cardinal Tisserant, Gedalge, Paris. OCLC23432852
1963, Catéchisme pour adultes à Saint-Séverin, Casterman, OCLC53641154
1963, Mémorial Louis Massignon, Sous la direction de Youakim Moubarac et des textes arabes de Ibrahim Madkour, Abd al-Rahman Badawi, Taha Hussein, etc., Dar el-Salam, Imprimerie de l'Institut Français d'Archéologie Orientale, Cairo. OCLC20425710
1964, Guide de l'église Saint-Séverin (XIIIe-XVIe siècles) Deuxième édition revue avec textes en espagnol, italien, anglais et allemand, Association Philippe Néri, Paris. OCLC80149006
1965, Bible, Liturgy, and Dogma, Notre Dame, Ind., Fides Publishers,OCLC1911571
1965, Saint-Séverin catechism for adults, G. Chapman, London, OCLC40209004
1965, Calendrier synoptique, juif, chrétien, musulman 1966, Devrue, Paris. OCLC53685344
1966, I Believe in God, Notre Dame, Ind., Fides Publishers. OCLC4174404
1966, Calendrier Synoptique, juif, chrétien, musulman, Philippe Néri, Saint Séverin, Paris.
1968, Vocation islamique de Jérusalem, Al Khal Editor, Beirut. OCLC65491009
1969, La Pensée chrétienne et l'Islam, des origines jusqu'a la prise de Constantinople, Sorbonne, Paris.
1971, Les Musulmans: consultation islamo-chrétienne, Seven Muslim intellectuals from North Africa, Egypt, Iran, and India replies to questions concerning relations with Christians., Beauchesne, Paris. OCLC545865