As one quotes in the movie, Fr. Jung was a 'real' human who can purely meet another person as a person itself transcending not only the boundary of religion but all human border such as race or nationality. This doesn't mean he was a great perfect human being. He was an 'ordinary' person who easily turns sulky, plays drunken frenzy, and had stinky feet. If there was anything special about this man, it would be that he had proactively chosen poverty and knew how to enjoy that poverty.