John puts pen to paper after most of the New Testament is written. This is a time when those who followed the way of Jesus were struggling to explain exactly who Jesus was. Was he a prophet in the Jewish tradition? Was he a sophist in the Greek tradition? Was he a god in the Roman tradition? No, says John, he was the obedient Son of the Father.This is a startling claim. People can deal with a wise man, or a holy man – but it is outrageous to have to accept Jesus as the Son of God. To Jews this is blasphemy, to Greeks it is not rational, while to Romans it is treason - because only the Emperor can use this title.
Every generation since then have had to struggle with this same question: “who is Jesus in our lives?” In choosing to believe that he is the Son of the Father we must then choose to obey his teaching as if God were speaking. If we have the life and teaching of the Son, we have already glimpsed the will of the Creator.
From: Week 7: The Son of GodFirst Sunday after Epiphany
(page 52 A Guide to Prayer for Ministers and other Servants)