He was born in Aleppo, Syria to Bashir Capucci (father) and Chafika Rabbath (mother) and was educated at St. Anne's Seminary in Jerusalem.

[3] He was subsequently convicted by an Israeli military court of using his diplomatic status to smuggle arms to the Palestine Liberation Army and sentenced to 12 years in prison.

If we go back in history we find other bishops who smuggled weapons, gave their lives and committed other illegal actions to save Jews from Nazi occupation.

He made several visits to the hostages, and in early May 1980 he obtained the release of the bodies of the American soldiers who had died in the refueling accident during the rescue mission.

He was a passenger on MV Mavi Marmara,[13] which was seized in the early hours of Monday, 31 May, by the Israeli Navy, with nine people killed and many injured.