This epistle does not contain the name of its writer, but from its very early history the church believed the Apostle John wrote it. Several ancient writers referred to this book as John's writing.1Though modern critics have challenged this view they have not destroyed it.
Neither is there any reference to who the first recipients of this epistle were or where they lived other than that they were Christians (2:12-14, 21; 5:13). They may have been the leaders of churches (2:20, 27). According to early church tradition John ministered in Ephesus, the capital of the Roman province of Asia, for many years after he left Palestine. We know that he knew the churches and Christians in that Roman province well from Revelation 2 and 3. Perhaps his readers lived in that province.
The false teachers and teachings to which he alluded suggest that John wrote about conditions that existed in Asia: Judaism, Gnosticism, Docetism, the teachings of Cerinthus (a prominent Gnostic), and others.2These philosophies extended beyond Asia, but they were present there during John's lifetime.
This is one of the most difficult of all the New Testament books to date. One of the few references in the book that may help us date it is 2:19. If John meant that the false teachers had departed from among the apostles, a date in the 60s seems possible. This would place it about A.D. 60-65, before the Jewish revolts of A.D. 66-70 scattered the Jews from Judea. In this case John may have written from Jerusalem.3However many conservative scholars believe John wrote this epistle much later. They suggest between about A.D. 85 and 97, when he evidently wrote the Gospel of John (ca. A.D. 85-95) and the Book of Revelation (ca. A.D. 95-96).4I prefer a date in the 90s following the writing of John's Gospel that 1 John seems to assume.5In view of the nature and the conclusion of the Book of Revelation, which seems to be God's final word to humankind, I think John probably composed his Epistles before that book. So a date for 1 John in the early 90s, A.D. 90-95, seems most probable to me.6
Since John ministered in and around Ephesus later in his life, that seems to be the most probable place from which he wrote this epistle.7
"The writer of 1 John was thus addressing a community, made up of a number of house-churches in and around Ephesus . . ., which was split in three ways. It consisted of the following: (a) Johannine Christians who were committed to the apostolic gospel of Jesus as they had received it; (b) heretically inclined members from a Jewish background; (c) heterodox followers from a Hellenistic (and/or pagan) background. The problems relating to the two heretical' groups, (b) and (c), were primarily theological and (by extension) ethical; although related difficulties concerning eschatology and pneumatology may have been present also (see on 2:18 and 4:1 . . .). . . .
"To complete the picture, it should be noted that the life of the Johannine community was marked by the presence of a fourth group of people: the secessionists. Whereas the members of the first three groups could be found within John's circle, the anti-Christian secessionists had begun to break away from it. These were heretically inclined adherents of the Johannine community. In some cases they may have been genuine, if uninformed, believers. But in other instances they perhaps never properly belonged to John's church (although they thought they did), because they never really belonged to God (see on 1 John 2:18-19; cf. also 2:22-23)."8
