It was the same with the younger son who squandered his property and wasted his father’s property living among prostitutes. Despite all this, he did not lose his honorable title of son. In the land of captivity, having rejected his father, he rather remembered, “How many hired servants are at this moment in my father’s house who have more than enough bread, but here am I perishing from hunger.” He was still a sinner. He had sinned to such an extent that he had thrown to the winds with his misdeeds the entire inheritance he had received from his father. He still called God his father. This indicates that the grace of the Spirit, which authorizes him to call God Father, did not depart from him. We are unable to employ this term of address and call God Father, except through the authority of the Holy Spirit who is within us. It is well known that those who have not yet become God’s children by the holy rebirth of baptism are not authorized to use this term. They are not permitted to say, “Our Father, who art in heaven, hallowed be thy name.” The apparent reason for this is that the Holy Spirit is not yet within them to give them this authorization. It is well known to all that, when they approach the holy mysteries, the newly baptized all repeat this prayer with confidence in accordance with the tradition handed down by our Lord, and then they proceed to the holy mysteries.