In the year 2001, His Holiness ordained him as a full priest/Rabban and sent, to serve for three months in Sweden. Later, His Holiness sent him to Athens University in Greece to study the language. His Eminence Mor Gregorios Saliba Shamoun, bishop of Mosul and Environs, had written to the Patriarch asking His Holiness' to ordain Rabban Daoud Sharaf as his assistant. His Holiness summoned Rabban Daoud for this purpose, leaving his service at Mor Malki church in Sydney, Australia. On Tuesday March 23, 2010 an apostolic decree was issued whereby Rabban Daouod was officially appointed an assistant to Archbishop Saliba Shamoun serving the Archdiocese, spiritually and managerial.

He was awarded the Holy Cross by His Holiness the Patriarch in 2005 for his meritorious and dedicated service in the Archdiocese of Mosul & Environs.  He served Mor Malki church in Sydney Australia for over three years. Reverend Father Rabban Daoud is well known for his love to serve, preach, and sermonize.

On Sunday, 27th November 2011, His Holiness The Patriarch of Antioch and All the East Moran Mor Ignatius Zakka-I Iwas assisted by Metropolitans, consecrated Very Rev. Fr. Daoud Matti Sharaf as Archbishop of Mosul & Environs by name MOR NICODEMOS at a solemn ceremony held at the St. Peter & St. Paul Cathedral, Mor Aphrem Monastery, Maarat Saydnaya, Damascus - Syria.