What difference does it make whether John's Gospel is intended for a Jewish audience or for Gentiles? It's intended for all but, like the other New Testament writings it's deeply Jewish in character because it's author was looking for the Messiah promised in the Old Testament and in the proclamation of John the Baptist who John previously followed. John found what he was looking for in the person of Jesus of Nazareth and tells us the signs which he finds most convincing so that we, the readers will believe not just in the death and resurrection of Jesus but he takes us back to the very beginning and before with the words, "In beginning was the Word and the Word was with God and the word was God" and then points to the Light which the darkness has never overcome, that Light that was the first created thing spoken into being, that Light, John says, is Jesus. In these first 18 verses John tells us that to understand Jesus, go back to the beginning and re-read the Old Testament through that lens. The entirety of Scripture is the Word of God, not just the red letters.
