The words of the author refer to two, not one. 

You're trying to get me to leave the author's words, and address your rather prolix comment.

So let me do that.

"Christian faith requires maintaining a delicate balance"

No, it requires full acceptance of a single difficult truth, using all that our intellect can provide in the matter, and for what it can't do, using a faith that we ask for from God, who is One.  

Second, there is no "evolving" understanding of Jesus's divinity.  This matter was definitively and formally put to rest (amid much heresy not unlike some of the author's and your words) at the Council of Nicea in the 300s. 

Just pray over the Athanasian Creed for a while, perhaps in front of the Tabernackle, and some bad ideas will be set aright.