A year later he enrolled in the Major Roman Catholic Theological Seminary in Lviv. In 1887 he became a priest and, after the death of Archbishop Izaak Mikołaj Isakowicz of Lviv, in 1901 was named to succeed him.
A year after his initial enrollment, he joined the Major Roman Catholic Theological Seminary in Lviv. By 1887, he had been ordained as a priest and, upon the passing of Archbishop Izaak Mikołaj Isakowicz of Lviv in 1901, he was chosen to succeed him.