I JOHN (First Epistle of St. John) - This letter, written toward the end of the 1st Century A.D., has traditionally been attributed by the Church to St. John the Evangelist. The letter has a two-fold purpose: 1) to deepen the spiritual life of its readers (1:3-4), and 2) to correct the heretical views of certain Gnostic teachers who denied that God had really become man in Jesus (4:2). The theme of love runs throughout and the book is full of contrasts: light and darkness (1:6-7; 2:8-11); love of world and love of God (2:15-17); children of God and children of the Devil (3:4-10); the Spirit of God and the spirit of Antichrist (4:1-3); love and hate (4:7-12, 16-21).