Saint Moses Macinic was ordained to the holy priesthood in Bucharest around 1746, and worked to oppose the Unia. Because of his activities he was arrested and jailed in Sibiu for seventeen months. Ultimately, he was released with the understanding that he would cease to function as a priest, and live as an ordinary peasant.
In 1752 he was chosen to go to Vienna with Saint Oprea Nicholas of Salistie to deliver a petition to Empress Maria Theresa. The petition asked her to recognize the rights of the Orthodox Church in Transylvania. She received them, but she had them thrown into the Kufstein Prison in the Tyrolean Mountains.
Although representatives from Transylvania repeatedly asked the Hapsburg rulers to free the two saints, they denied all knowledge of them.
Saint Moses Macinic was glorified as a martyr by the Orthodox Church of Romania in 1992.