The Fourth Gospel is deeply shaped by its remarkably high Christology. It depicts the earthly Jesus, the incarnate one, as fully divine. This unrelenting Christology has led interpreters, both ancient
Professor Pollard attempts to show how the early Church interpreted the Gospel of John and its witness to the person of Christ. The two paradoxes implicit in John's theology - the distinction between the Father and the Son in the unity of the Godhead, and the divinity and humanity of Jesus Christ - were developed in varying ways and the resultant heresies arose from attempts to deny one element or the other in each paradox. In their refutation of the heresies, on the other hand, the Fathers struggled to keep both elements of the paradoxes in equipoise. The different traditions came into conflict in the controversy which raged around the figure of Arius and his supporters in the fourth century, of which the climax came in the debate about the views of Marcellus of Ancyra.
For the author of the fourth Gospel, there is neither a Christless church nor a churchless Christ. Though John's Gospel has been widely understood as ambivalent toward the idea of 'church', Andrew Byers argues that ecclesiology is as central a Johannine concern as Christology. Rather than focusing on the community behind the text, John's Gospel directs attention to the vision of community prescribed within the text, which is presented as a 'narrative ecclesiology' by which the concept of 'church' gradually unfolds throughout the Gospel's sequence. The theme of oneness functions within this script and draws on the theological language of the Shema, a centerpiece of early Jewish theology and social identity. To be 'one' with this 'one God' and his 'one Shepherd' involves the believers' corporate participation within the divine family. Such participation requires an ontological transformation that warrants an ecclesial identity expressed by the bold assertion found in Jesus' citation of P
