NO ONE is a son of God by incarnation.I agree that Jesus Christ ALONE is THE Son of God !!!
My question was...
How is one a Son (capital S) of God?
My answer is... by incarnation
Luke 1:35... And the angel answered and said unto her, The Holy Ghost shall come upon thee, and the power of the Highest shall overshadow thee: therefore also that holy thing which shall be born of thee shall be called the Son of God.
Your answer is... by eternal begettal
Would you like to provide a Bible passage?
THE ONE and ONLY Son of God is from the beginning. Nothing to do with incarnation.1 John 1:1-2.
BTW Luke 1:35 refers to THE(NOT a)Son of God.