ISB ~ John 1 v6

John:John the Baptist, who fulfilled a divine mission to Israel (1:31) but was not the divine Messiah (1:20). Emphasis on John’s subordinate role to Jesus runs throughout the Fourth Gospel, suggesting that one of the aims of the evangelist is to win over the remaining band of John’s disciples who had not yet accepted Jesus (3:25-30; 5:36; 10:41). Support for this is found in Acts 19:1-7, where we learn that a contingent of John’s followers lived in Ephesus—the same city that tradition links with the publication of the Fourth Gospel.

See introduction:Author.