It the fourth of the catholic or "general" epistles. It was traditionally held to have been written by John the Evangelist, and probably also at Ephesus, and when the writer was in advanced age.
The Epistle's content, language and conceptual style is an indication that a common authorship existed between this letter, the two other letters attributed to the Apostle John, as well as the Gospel of John. Whether the author was the Apostle John himself, someone who wrote under his name and spoke "for him", or whether a body of authors contributed to the writing of all four Johannine texts is an open question.
The author wrote the Epistle so that "you who believe in the name of the Son of God... may know that you have eternal life." (5.13) It appears as though the author was concerned about heretical teachers that had been influencing churches under his care. Such teachers were considered Antichrists (2.18-19) who had once been church leaders but whose teaching became heterodox. It appears that these teachers taught that Christ was a Spirit being without a body (4.2), that his death on the cross was not as an atonement for sins (1.7) and that they were no longer able to sin (1.8-10)
The purpose of the apostle (1:1-4) is to declare the Word of Life to those to whom he writes, in order that they might be united in fellowship with the Father and his Son Jesus Christ. He shows that the means of union with God are, (1) on the part of Christ, his atoning work (1:7; 2:2; 3:5; 4:10, 14; 5:11, 12) and his advocacy (2:1); and (2), on the part of man, holiness (1:6), obedience (2:3), purity (3:3), faith (3:23; 4:3; 5:5), and love (2:7, 8; 3:14; 4:7; 5:1).
External links
Online translations of the First Epistle of John:
1 John at Bible Gateway (http://www.biblegateway.com/bible?language=English&Version=NIV&passage=1John) (various versions)
(1) God, who is light and love, incarnated to be the reality of the divine things, such as the divine life, the divine nature, the divine power, and the divine glory, for us to possess, that we may enjoy Him as grace, as revealed in Johns Gospel (John 1:1, 4, 14-17).
For instance, in John 3:21, according to the context, it denotes uprightness (the opposite of evilJohn 3:19-20), which is the reality manifested in a man who lives in God according to what He is and which corresponds with the divine light, which is God, as the source of the truth, manifested in Christ.
In John 4:23-24, according to the context of that chapter and also according to the entire revelation of Johns Gospel, it denotes the divine reality becoming mans genuineness and sincerity (the opposite of the hypocrisy of the immoral Samaritan worshipperJohn 4:16-18) for the true worship of God.
It was traditionally held to have been written by John the Evangelist, and probably also at Ephesus, and when the writer was in advanced age.
Whether the author was the Apostle John himself, someone who wrote under his name and spoke "for him", or whether a body of authors contributed to the writing of all four Johannine texts is an open question.
He shows that the means of union with God are, (1) on the part of Christ, his atoning work (1:7; 2:2; 3:5; 4:10, 14; 5:11, 12) and his advocacy (2:1); and (2), on the part of man, holiness (1:6), obedience (2:3), purity (3:3), faith (3:23; 4:3; 5:5), and love (2:7, 8; 3:14; 4:7; 5:1).