The Son "of God"

Therefore I also, after I heard of your faith in the Lord Jesus and your love for all the saints, do not cease to give thanks for you, making mention of you in my prayers:

that the God of our Lord Jesus Christ, the Father of glory, may give to you the spirit of wisdom and revelation in the knowledge of Him, the eyes of your understanding being enlightened.

-- Ephesians 1:15-18 (NKJV)

Jesus is not "the Son as God", but the Son of God.

This how Jesus was identified in the Gospels, for example:

The beginning of the gospel of Jesus Christ, the Son of God. -- Mark 1:1 (ESV)

And I have seen and have borne witness that this (Jesus) is the Son of God. -- John 1:39 (ESV)

Simon Peter replied, “You are the Christ, the Son of the living God.” -- Matthew 16:16 (ESV)

Now Jesus did many other signs in the presence of the disciples, which are not written in this book; but these are written so that you may believe that Jesus is the Christ, the Son of God, and that by believing you may have life in his name. -- John 20:30

This is how Gabriel identified Jesus:

And behold, you will conceive in your womb and bear a son, and you shall call his name Jesus. He will be great and will be called the Son of the Most High. And the Lord God will give to him the throne of his father David, and he will reign over the house of Jacob forever, and of his kingdom there will be no end.”
And Mary said to the angel, “How will this be, since I am a virgin?”
And the angel answered her, “The Holy Spirit will come upon you, and the power of the Most High will overshadow you; therefore the child to be born will be called holy — the Son of God.

-- Luke 1:31-35 (ESV)

This is how God the Father identified His Son:

It came to pass in those days that Jesus came from Nazareth of Galilee, and was baptized by John in the Jordan. And immediately, coming up from the water, he saw the heavens parting and the Spirit descending upon him like a dove. Then a voice came from heaven,

You are My beloved Son, in whom I am well pleased.”

-- Mark 1:9-11 (NKJV)

which is also Peter's testimony:

For we did not follow cunningly devised fables when we made known to you the power and coming of our Lord Jesus Christ, but were eyewitnesses of his majesty. For he received from God the Father honor and glory when such a voice came to him from the Excellent Glory:

“This is My beloved Son, in whom I am well pleased.”

And we heard this voice which came from heaven when we were with Him on the holy mountain.

-- 2 Peter 1:16:18 (NKJV)

This is how the apostles identified the Son:

And immediately he (Paul) proclaimed Jesus in the synagogues, saying, “He is the Son of God.” -- Acts 9:20 (NKJV)

Paul, a servant of Christ Jesus, called to be an apostle, set apart for the gospel of God, which dhe promised beforehand through his prophets in the holy Scriptures, concerning His Son, who was descended from David according to the flesh and was declared to be the Son of God in power according to the Spirit of holiness by his resurrection from the dead, Jesus Christ our Lord, through whom we have received grace and apostleship to bring about the obedience of faith for the sake of his name among all the nations, including you who are called to belong to Jesus Christ -- Romans 1:1-6 (NKJV)

For the Son of God, Jesus Christ, whom we proclaimed among you... -- 2 Corinthians 1:19 (NKJV)

But when the fullness of the time had come, God sent forth His Son, born of a woman, born under the law, to redeem those who were under the law, that we might receive the adoption as sons. -- Galatians 4:4-5 (NKJV)

Since then we have a great high priest who has passed through the heavens, Jesus, the Son of God, let us hold fast our confession. -- Hebrews 4:14 (NKJV)

This is how unbelievers identified the Son:

When the centurion and those who were with him, keeping watch over Jesus, saw the earthquake and what took place, they were filled with awe and said, “Truly this was the Son of God!” -- Matthew 27:54 (NKJV)

Jesus is not God because:

In addition: