In The Fourth Gospel: Tales of a Jewish Mystic, John Shelby Spong contends that the author of the gospel did not intend for the resurrection, or Jesus' claim to be God, to be taken literally, and that the literal interpretation was a distortion introduced "by the Nicene and post-Nicene fathers, who used it to formulate their creeds." (p.53)
To support this contention, Spong points to subtle details. For example, when Jesus appears to the disciples after being buried, the gospel notes that the room where they were was locked, implying that what they saw was not a physical body, since a physical body cannot go through walls.
Spong contends that when Jesus refers to himself as "I Am", he is not saying that he is God incarnate, but rather that he is in a spiritual oneness with God that every person should aspire to achieve, by being willing to love freely and even to give up one's life.
Spong also points out that the gospel was written at a time - around 100 CE - when the synagogue excommunicated those that embraced Jesus as the Messiah, so John was writing to those Christians who were "compelled...to redefine Jesus and their Jesus experience in a new, transcendent, mystical and universal language." (p. 54)
This view of the gospel of John is highly controversial and rejected by mainstream Christians, but it is worthy of study. Perhaps it can illuminate that Christianity and Judaism are two paths to one God.