Jesus mentioned his pre-incarnate state in his prayer to the Father. The cause for the stoning was alleged blaspheming. Jesus is the Creator . John not only introduces Jesus as being the Word, with the Father, and in the beginning, but he presents Jesus as being the actual Creator of all things created. Jesus is the true light .
Light is symbolic of knowledge, goodness, and purity.
John later wrote that Jesus not only is the source of light, but also is himself light. Jesus, the King of Israel . The modernist attempts to strip Jesus of his deity and the Premillennialist endeavors to divest Jesus of his regal authority and Kingship. Jesus accepted Nathanael's designation as accurate. Jesus is the King in his Kingdom.