Abp. Serge was born on July 8, 1941, in Louvain, Belgium. He studied Germanic languages at the University of Louvain. He was married fathered three children, and was ordained a deacon in 1968 by Abp. Georges (Tarassoff) of Syracuse in Brussels and was elevated to the rank of protodeacon in 1976. He was ordained to the priesthood in 1980 by Bp. Georges (Wagner) of Evdokia and was elevated to archpriest in 1985.