According to the Writings, the "Son of God" represents the Lord in regards to His divine humanity, and also in regards to the divine truth that expresses His infinite love. In many ways these are the same thing. Divine truth is the Lord's love given form. Jesus was (and is) the Lord's love given form.

That's a fairly deep concept, but what matters is that even from the safety of our accepted doctrinal beliefs, we can see and acknowledge that the Lord is greater, that He is for all people, and that His truth rises above and encapsulates all other knowledge.