In 1965 he was ordained deacon by Mor Gregorios Geevarghese Vayaliparambil of Ankamali.
Abraham served as the vicar of St. Peter's Church in Chicago under Archbishop Mor Athanasius Yeshue Samuel from 1979 to 1981.
In 1982, the Ankamali Diocesan Council, held under Dionysius Thomas (Aboon Mor Baselios Thomas I), chose Abraham as the Assistant Metropolitan of the Diocese.
After assuming charge as the auxiliary bishop of Ankamali Diocese, Abraham Mor Severios commenced many charity programs.
A list of few institutions started by Severios are: As of 2013[update]: Jacobite Syrian Church