Jesus' incursion into enemy territory is giving us back what was lost.
Prologue: To better understand the beginning, let's consider the ending of the book. John 20:26-31
He always was
He was with God
He is God
He was the reason all things came into being
Eternal Life - God's Life
That life in the Logos: Brings illumination, natural and spiritual
True light: Original light, not a weakened reflection of it
Receiving and Believing gives authority to become (middle voice - legal access) Children of God