How would you deal with the question: “When did the Son of God exist?” Notice that it’s not asking “when was the Word created” or “Is Jesus eternal?” The question is specifically asking about the Son of God and doing that assuming a whole bunch of things about what it means to be the Son of God.
In a recent discussion about the validity of Trinitarian theology there was some questions about the use of the term “Son of God” as applied to Jesus. Some have argued that (1) the Son of God can’t technically be part of the Godhead since the Son is the physical manifestation of the Word. The basic argument is that “Son of God” is temporal language (like Jesus) which can only come into proper usage when the Son is born (Luke 1:35-this one will be called the Son of God). Others argued that (2) “Son of God” is an ambiguous term completely interchangeable with “Jesus Christ” and “The Word of God”. Yet others argue that (3) the term “Son of God” has been imbued with new (and exegetically unsound) theological meaning by the New Testament writers.
Starting with their own presuppositions they each make some solid points but I would argue that contra (1) the term refers to something with intent that can only be realized with a preexistent Sonship; contra (2) the term has specific meaning; and contra (3) the terminology’s usage has been properly realized by the New Testament authors.