[2] From 1988 to 1989 he served at the library and Icon Gallery of Saint Catherine's Monastery on Mount Sinai in Egypt.
[2] From 1991 to 1993, he studied at the Hellenic College Holy Cross Greek Orthodox School of Theology in Brookline, Massachusetts, the U.S., where he earned a Th.M in Patrology.
[2] On 23 December 1998, he arrived in Korea to serve as Dean of St Nicholas Orthodox Cathedral in Seoul.
[2] Bishop Ambrosios was elected to the office of Metropolitan of Korea on 28 May 2008,[1][3] and was enthroned 20 July 2008, at St Nicholas Cathedral in Seoul.
On 28 November 2016, he was elected the president of the National Council of Churches in Korea and served for a one-year term.