Born in East Flores Regency, Kopong Kung was ordained a priest in the Archdiocese of Ende on 29 June 1982.

[1] On 10 January 2002 Kopong Kung was ordained as bishop, with Nggawa being the principle consecrator, and Longinus Da Cunha, then archbishop of Ende, and Leo Laba Ladjar O.F.M.

[1] After Nggawa's official retirement after he turned 75, Kopong Kung was installed as permanent bishop of Larantuka on 16 June 2004.

[3] After priest and monks in his diocese held demonstrations over the killing of a man by police in March 2014, Kopong Kung refused to denounce the clergy who protested but warned them to not drag the Catholic church in Indonesia into politics.

[4] Kopong Kung was one of the co-consecrators of Ewaldus Martinus Sedu, who was ordained bishop of Roman Catholic Diocese of Maumere on 26 September 2018.