On Thursday the Sixth week of Easter our Church invites us to first read and reflect on a passage from the first letter of the apostle John (3:1-10) entitled "We are children of God". Our treasure, which follows, is from a sermon by Saint Leo the Great, pope.
Saint Leo became pope in the year 440. Saint Leo was a Roman aristocrat, and was the first pope to have been called "the Great". Saint Leo is known as one of the best administrative popes of the ancient Church. His work branched into many areas of the church, indicative of his notion of the pope's total responsibility for the flock of Christ. In the 96 sermons which have come down to us, we find Leo stressing the virtues of almsgiving, fasting, and prayer, and expounding Catholic doctrine with clarity and conciseness, particularly the dogma of the Incarnation. Leo is perhaps best known for having met Attila the Hun in 452 and having persuaded him to turn back from his invasion of Italy.
The purpose of the first letter of the apostle John is to combat certain false ideas, especially about Jesus, and to deepen the spiritual and social awareness of the Christian community. Some former members of the community refused to acknowledge Jesus as the Christ and denied that he was a true man. The specific heresy described in this letter cannot be identified exactly, but it is a form of Docetism or Gnosticism; the former doctrine denied the humanity of Christ to insure that his divinity was untainted, and the latter viewed the appearance of Christ as a mere stepping-stone to higher knowledge of God. These theological errors are rejected by an appeal to the reality and continuity of the apostolic witness to Jesus. The author affirms that authentic Christian love, ethics, and faith take place only within the historical revelation and sacrifice of Jesus Christ. The fullness of Christian life as fellowship with the Father must be based on true belief and result in charitable living; knowledge of God and love for one another are inseparable, and error in one area inevitably affects the other. Although the author recognizes that Christian doctrine presents intangible mysteries of faith about Christ, he insists that the concrete Christian life brings to light the deeper realities of the gospel.
