Here are some scriptures to consider carefully, that Jesus was the Son of God even before he came to earth.
The Bible teaches that the Son has eternally existed in the bosom of the Father. John 1:18 translated literally from the Greek says this: “No man hath seen God at any time; the only begotten Son, THE ONE EVER BEING (existing) IN THE BOSOM OF THE FATHER, He hath declared Him.”
There are passages that speak of the Father SENDING the Son all imply that Christ existed as the Son prior to coming to earth, 1 John 4:10, 14; John 3:16; John 20:21; Galatians 4:4.
Does not Proverbs 30:4 tell us that God had a “son”?
However, Jesus being called “the Son of God,” might only be what Jesus was called after coming to earth, but it does not mean that Jesus did not exist as Jesus before coming to earth.
Melchisedec was “without father, without mother, without descent, having neither beginning of days, nor end of life” (Hebrews 7:3). As to His humanity, Christ did have a mother, a genealogy, beginning of days, an end of His life when He died on the cross. So, with that in mind, maybe Jesus was not actually called God’s Son prior to coming to earth. The way of Melchisedec may or may not imply that Jesus was not considered a Son before coming to earth...something definitely to consider deeply.
God, who lives in unapproachable light, whom no one has seen or can see, only Jesus has seen Him, the invisible God, Jesus was created in His image, before the creation of the world, and who is the reincarnate Jesus. God calls Jesus His Son when Jesus was on earth, and Jesus was created in God's image before coming to earth, so why not be called the Son of God then too?
These next two scriptures are about God the Father...
1 Timothy 6:16 who alone is immortal and who lives in unapproachable light, whom no one has seen or can see. To him be honor and might forever. Amen.
1 Timothy 1:17 Now to the King eternal, immortal, invisible, the only God, be honor and glory for ever and ever. Amen.
And these next scriptures are about Jesus...
John 1:18 No one has ever seen God, but God the One and Only, who is at the Father's side, has made him known.
Colossians 1:15 He is the image of the invisible God, the firstborn over all creation. 16For by him all things were created: things in heaven and on earth, visible and invisible, whether thrones or powers or rulers or authorities; all things were created by him and for him. 17He is before all things, and in him all things hold together.
This next scripture says God has spoken to us in these last days by His Son...and through whom also He made the universe...so, would not it be reasonable to believe that this scripture is saying the universe was made through the Son.
Hebrews 1:2 but in these last days he has spoken to us by his Son, whom he appointed heir of all things, and through whom also he made the universe.