On December 19, 2001, Rabiy was ordained to the priesthood. Pope Francis appointed Rabiy auxiliary bishop for the Ukrainian Catholic Archeparchy of Philadelphia on August 8, 2017.[1][2] On September 3, 2017, Rabiy was consecrated as a bishop. On September 24, 2017, Rabiy was installed as auxiliary bishop. On April 16, 2018, Rabiy was named Apostolic Administrator of Philadelphia when Archeparch Stefan Soroka's resignation was accepted by Pope Francis.[3]