This was the specific topic of my book, The Missing Gospels. There was some development in articulation and even elements of understanding in the period White writes about. My key point would be that it is not as contrastive as White argues for, nor are the developments out of line with things already said very early one. In other words, whether Jesus speaks of being seated at God's right hand and being the Son of Man riding the clouds or John calls Jesus Logos (the Word), both ideas carry the concept that Jesus is divine. Many developmental views pit the gospels against each other (or Paul and the gospels), when what is taking place are different expressions to say very similar things (where one expression may be more explicit, but is still entailed in either way of saying things).

dlb