The First Epistle of St. John the Apostle
The same vein of divine love and charity towards our neighbour, which
runs throughout the Gospel written by the beloved disciple and Evangelist,
St. John, is found also in his Epistles. He confirms the two principal
mysteries of faith: The mystery of the Trinity and the mystery of the
incarnation of Jesus Christ the Son of God. The sublimity and excellence
of the evangelical doctrine he declares: And this commandment we have from
God, that he, who loveth God, love also his brother (chap. 4.21). And again:
For this is the charity of God, that we keep his commandments, and: His
commandments are not heavy (chap. 5.3). He shews how to distinguish the
children of God from those of the devil: marks out those who should be
called Antichrists: describes the turpitude and gravity of sin. Finally,
he shews how the sinner may hope for pardon. It was written, according to
Baronius' account, sixty-six years after our Lord's Ascension.