The preceding quotation implies that John wrote primarily for Christians. This implication may seem to be contrary to John's stated purpose (20:30-31). Probably John wrote both to convince unbelievers that Jesus was the Son of God and to give Christians who faced persecution confidence in their Savior. The word "believe"in 20:31 may be in the present tense implying that Christian readers should continue believing. It could be in the aorist tense suggesting that pagan readers should believe initially. An evangelistic purpose does not exclude an edification purpose. Indeed all 66 books of the Bible have edifying value for God's people (2 Tim. 3:16-17). John's purpose for unbelievers is that they might obtain eternal life, and his purpose for believers is that we might experience abundant eternal life (10:10).
John explained Jewish customs, translated Jewish names, and located Palestinian sites. These facts suggest that he was writing for Gentile readers outside Palestine. Furthermore the prologue seems addressed to readers who thought in Greek categories. John's inclusion of the Greeks who showed interest in seeing Jesus (12:20-22) may also suggest that he wrote with them in view. Because of John's general purposes it seems best to conclude that the original readers were primarily Gentile Christians and Gentile unbelievers.25
"By the use of personal reminiscences interpreted in the light of a long life of devotion to Christ and by numerous episodes that generally had not been used in the Gospel tradition, whether written or oral, John created a new and different approach to understanding Jesus' person. John's readers were primarily second-generation Christians he was familiar with and to whom he seemed patriarchal."26
The writer did not indicate the geographical location of the original recipients of his Gospel. This was undoubtedly intentional since the message of John has universal appeal. Perhaps its first readers lived in the Roman province of Asia the capital of which was Ephesus.