John 13:23(NKJV) Now there was leaning on Jesus’ bosom one of His disciples, whom Jesus loved.
This unidentified man is reputedly John, himself. Why he refers to himself as such, I have no idea. I have noticed something though: amongst all the New Testament writings, those of John seem to convey a deep sense of intimacy. His gospel is unique among the four. It contains miracles and teachings not found in the other three gospels. (See the “I Am” statements of Christ.) His letters are all personal in nature. (See 1 John 2:1; 2 John 1:1, 3 John 1:1) The Book of Revelation gives us the broadest picture of end time events found in Scripture. Perhaps John’s closeness to Christ is affirmed to us through the quality of his writings.