Show me where God refers to His son as "God the Son"
then look up how many times Jesus is referred to as son of God.
Jesus is God's son, not God the son.
The true Identity of the Son incarnate is realized in hindsight after he raises his mortal form from the dead, meets with belivers on a number of occasions, then returned to his rightful place on high as a deity. Christ is now on high with all power and authority.
All of this was a revelation to mankind as it was not a part of the understanding of Judaism.