Wayne Grudem is one smart dude. In his Systematic Theology he makes this observation:
"It is by far the most amazing miracle in the whole Bible -
far more amazing than the resurrection
and more amazing than the creation of the universe.
The face that the infinite, omnipotent, eternal Son of God could become man and join Himself to a human nature forever, so that infinite God became one person with finite man,
will remain for eternity the most profound miracle and the most profound mystery in all the universe."