Archimandrite Justin was born to pious and God-fearing parents, Proto Spyridon and Protinica Anastasia Popović, in Vranje, South Serbia, on the Feast of Annunciation, March 25, 1894 (April 7 by the New Calendar). At baptism, he was given the name Blagoje, after the Feast of the Annunciation (Blagovest means Annunciation or Good News). He was born into a priestly family, as seven previous generations of the Popovices (Popović in Serbian actually means "family or a son of a priest") were headed by priests.