Where Did [the Son is God] Come From?

Jesus said to him, “I am the way, the truth, and the life. No one comes to the Father except through Me.” John 14:6 (NKJV) Jesus said to her, “Do not cling to Me, for I have not yet ascended to My Father; but go to My brethren and say to them, ‘I am ascending to My Father and your Father, and to My God and your God.’” John 20:17 (NKJV) If you agree that unless one believes [the Son is God] one cannot be saved, then can you tell me this? If the only way to Jesus’ God and Father is through Jesus (John 14:6 and 20:17), where did [the Son is God] come from?