Pierre Khảm was ordained to the priesthood on August 30, 1980, for the
Archdiocese of Ho Chi Minh City, and then served as
parochial vicar at Ha Dong church (1980–1983). After three years of his first assignment, he was transferred to assume the position of parochial administrator of Ha Noi church. He served the parish until 1987 when he was transferred to
Notre-Dame Cathedral Basilica of Saigon as
parochial vicar and held this position until 1999. Since 1997, he has been a professor at Saint Joseph Seminary of Saigon concurrently until 1999. From 2000 to 2004, he furthered his studies at
The Catholic University of America and earned a doctorate in
pastoral theology. After returning to Vietnam, he served as the Director of the Ho Chi Minh City Archdiocesan Pastoral Center. == Episcopal ministry ==