The focus of the chiasm of John 1:1-18 shows not only the objective of that passage but, given its location in the Prologue, shows that it provides the dominant theme for the Johannine Community.
I have provided three ways of presenting the chiasm, and each shows the same focus.
http://www.jwstudies.com/Chiastic_structure_of_John_1__1_to_18.pdf
The earliest Gospel – Mark’s – was composed about 40 years
after the time of Jesus’ ministry. Matthew’s Gospel was written about 55 years
after the time of Jesus. John’s Gospel was composed over a period from about 50
to 70 years after Jesus, while Luke’s Gospel spanned a period from about 50 to
90 years after Jesus.
None was or is a literal biography of Jesus. Each account
represents the views of each community; each account was written by, to and for
that community. Mark's Gospel provided a model and often the words, provided material for subsequent
Gospel writers, but each modified the story to account for its own needs, its
own liturgy.
No NT writing is a theological treatise. Any quibbling must be taken from the view of the Jewish mind at that time, not according to any current Westernised perceptions.
In addition to providing the views of its community, John’s
Gospel provides an insight into the community’s experiences and their
opposition to the views of other communities, often the leadership of the
synagogue, whom they called “the Jews”. In reality, the community members were
Jews but their experiences at the hands of the synagogue leadership embittered
the relationship. I have previously provided one account of that experience.
Doug