Bishop Domingos attended the Methodist Institute of Higher Education in Brazil where he graduated from the Faculty of Theology. He engaged in further study at the Bossey Ecumenical Institute (CMI), at the University of Geneva - Switzerland. He attained a Masters from the Public University of Évora, Portugal in the area of Educational Sciences and in April 2019, enrolled for a PhD at the Methodist University in Angola in Religious Studies.
At the 4th Annual Conference of Western Angola (I.M.U.A.) held at the Central Church of Luanda Ecclesiastical District, Bishop Domingos was ordained in 1988 as a Member of the Trial. At the 6th Annual Conference of Western Angola held at the Methodist Church of Emmaus (District of Luanda), he was ordained in 1990 to the Full Connection and Deacon. He was then ordained an Elder in the 8th edition of same Conference held in the Ecclesiastical District of Kuanza Sul-Kibala, in 1992.
In his pastoral ministry, Bishop Domingos was also appointed as a member of the Board of Trustees of the Emanuel Unido Seminar in Huambo, a member of the Board of Ordained Ministry of the C.A.O.A. and also the Central African Conference respectively.
Bishop Domingos was elected Bishop on August 17, 2000 at the 9th Central African Conference of the United Methodist Church held in Maputo-Mozambique and was consecrated as a Methodist Bishop on August 20, 2000.
On August 19, 2004 at the Central Conference of Africa, he was re-elected to the Episcopate having been declared Lifetime Bishop of the United Methodist Church in the world. He also enjoys membership of the General Commission for Christian Unity and Inter - religious Affairs, the Central African, European and Asian Pensions Initiative Task Force, the Council of Bishops' Finance Committee and the Central Conference Affairs Committee of the General Conference of the United Methodist Church.
Bishop Gaspar João Domingos is married to Revda Dra Lucrécia Manuel Alexandre Domingos and they have 6 children together.