Historical Context
After the Habsburg conquest of Transylvania in 1687, Metropolitan Atanasie Anghel led the Romanian Orthodox Church into communion with Rome through the Act of Union of 1698, formalized by synod on September 4, 1700. This union was promoted during the Counter-Reformation period and met with grassroots resistance from Orthodox believers who refused to abandon their tradition.
Oprea, together with the Serbian monk Visarion (Bessarion) Sarai, led Orthodox movements opposing the union. These leaders advocated for freedom of worship for the entire Transylvanian population, representing popular opposition to the forced ecclesiastical reorganization imposed by the Habsburg authorities.