Born in Versailles (
Yvelines) on 23 March 1951, After attending his secondary school at the
Lycée Hoche (
Versailles), Aupetit studied at the Bichat Medical School of the
University of Paris VII where he received an
MD degree in 1978. He further specialized in
medical ethics with obtaining a
DU degree in this field from the Faculty of Medicine of Créteil in 1994. His studies included time at and
Hôpital Necker. After that, he practiced general medicine in
Colombes from 1979 to 1990. He was ordained a priest for the Archdiocese of Paris on 24 June 1995 at the age of 44. He served initially as a vicar of the Church of
Saint-Louis-en-l'Île from 1995 to 1998, and then of
Saint-Paul-Saint-Louis from 1998 to 2001. He was also chaplain of high and middle schools of the
Marais from 1995 to 2001. From 2001 to 2006, he was assigned to the parish of , and dean in the Pasteur-Vaugirard deanery from 2004 to 2006. From 2006 to 2013 he was vicar general of the Archdiocese of Paris. == Bishop ==