A national German Church is a denial of the unity of the Catholic Church and its unity with the Roman Pontiff. Revelation' is God's revelation of himself. Original sin' is man's inheritance of the sin of Adam and its effects are removed through the passion and death of Christ. The reformers who ridicule Christian humility are simply indicating their own pride. Society can never be separated from God's divine law that is discovered in faith.
Morality lies in the natural law.
To the Catholic youth of Germany, the Holy Father says that he knows that they are under assault from all sides by a gospel that is not from God. They will suffer insults for their faith in Jesus. They have a right to have youth organizations that are not hostile to the Church or Christianity. Don't confuse freedom with sin and sensuality. The Holy Father congratulates the priests and bishops for their work in aiding the faithful.