Fr. Bellamah was born and raised in Washington, D.C. He entered the Order of Preachers in 1991 and was ordained a priest in 1998. He studied at Wake Forest University (B.S., 1982), the Pontifical Faculty of the Immaculate Conception (M.Div. and S.T.B., 1997; S.T.L, 1999) and the Ecole Pratique des Hautes Etudes, Paris, (Ph.D., Section des sciences Religieuses, 2008).

He has previously taught at Providence College in the Department of Theology and the Department of the Development of Western Civilization. He is a collaborator of the Leonine Commission, a team of Dominican scholars responsible for the production of critical Latin editions of the writings of St. Thomas Aquinas. He is also currently preparing a critical Latin edition of the Commentary on John's Gospel by one of St. Thomas' Dominican contemporaries, William of Alton.