According to Biblical Unitarians, what does it mean for Jesus to be the Son of God?

What does the son of God mean regarding Jesus?

From a Biblical Unitarian understanding as requested, Jesus is the one God sent into the world. He is the only holy man, born of Mary by God's intervention (as the 2nd Adam) who has accomplished what God sent him to do. Without him, there could be no resurrection to eternal life, no remission of sin, no reconciliation with God and no defeat of evil and death, no new heavens or new earth. Jesus, as the holy son of God, accomplished all this as a man and not as God.

Generally the same as most Christian denominations, except for Jesus being a man only as expressed by the scriptures below.

Beginning with the 4 complementary Gospels, the origin and means of Jesus' beginning is explained.

the angel said to her, “Fear not, Mary; for you have found favour with God. 31And behold, you will conceive in womb, and will bring forth a son, and you shall call his name Jesus. 32He will be great, and he will be called Son of the Most High. And the Lord God will give him the throne of his father David, 33and he will reign over the house of Jacob to the ages. And of his kingdom there will be no end!”

35And the angel answering, said to her, “The Holy Spirit will come upon you, and the power of the Most High will overshadow you; therefore also the holy one being born will be called the Son of God Luke 1:30-35

Luke begins his Gospel with this important pronouncement. Luke 1:3-

it seemed fitting to me as well, having investigated everything carefully from the beginning, to write it out for you in an orderly sequence, most excellent Theophilus; 4so that you may know the exact truth about the things you have been taught.

An exact truth... To infer another beginning or to suggest there is another pre-existing Son is without biblical merit and support unless one relies on biased translations and solitary, mis-applied proof texts.

The Lord Jesus is who Peter said he was, “a man approved of God” Acts 2:22. I wont labour the matter here with all the scriptures describing Jesus as a man. Simply, that is all he is described as - a holy man without sin who experienced life as all men do - facing evil (temptation) and relying totally on his God and Father to save him from sin and a resultant death (Heb 5:7).

Jesus himself said he was a man. To make him something other is to make him a liar or to make him speak with forked tongue.

But now you seek to kill me, a man who has spoken to you the truth that I heard from God. John 8:40

That Jesus has a God - just as all men do, even once raised from the dead, exalted to God's right side, he still (obviously) has a God, Rev 3.

I ascend to my Father and your Father, and my God and your God John 20:17

So the son of God is not God, no scripture says he is, but supports the consistent revelation of the man born of Mary, who could be the Lamb of God - being tempted, able to sin, able to die - none of which God can do.

Now this is eternal life: that they know you, the only true God, and Jesus Christ, whom you have sent. John 17:3

We also have confirmed that Jesus began as a mortal human actually mastered by death just as all men are Rom 6:9. He has his own will which needed to be made subject to God's will - all his life to, and including the cross. After he was raised by his God and Father, he became the firstborn of the dead and the firstborn of creation (these are two descriptors of the same occasion).

He is the image of the invisible God, the firstborn of all creation... he is the beginning, the firstborn from the dead, so that he himself will come to have first place in everything Col 1:15-18

'First place' under God in all things. God who gave him life (John 5:26), the spirit and the giver of spirit life (Acts 2:33) to those who trust in him because God has granted him authority - while on earth to forgive sin and raise the dead, and in heaven to judge and grant eternal life at the resurrection. Of himself, he said he could do nothing (John 5:30) but did and spoke as God gave him.

Jesus, the Son of God, born of Mary, descendant of Abraham (Gal 3:16) and David, promised and prophesied since Gen 3 of the one to come who would be the Messiah and Saviour of the world, defeated evil and death, made Lord and Christ, and now sits at God's right hand in command over all things under God.

For Jesus to be also (somehow) God, this generates far too many contradictions with scripture to remain a valid hypothesis.

Conclusion

What does it mean for Biblical Unitarians that Jesus is the son of God?

It means that he is who he said he was and not what tradition says he should be. As the brief sampling above shows, Jesus is a man only and not a pre-existing ‘God the Son’ scripture makes no mention of.

Jesus is the one who 'overcame', who learned obedience through suffering, who submitted his different will to align with God's, who was tempted in all things as men are yet without sin. This God could do without any trouble, so why go through all this complicated process at all? God needs to overcome nothing, does not need to learn, or grow or mature. The concept of a two-natured Jesus is also without scriptural support and is unfortunately a doctrine of men and not of God or of the teachers God established the church under, the Apostles.

The BU understanding of Jesus aligns with scripture in ways that no other denomination does. There is no need to add to the word of God, it is self-interpretive and needs no post-Apostolic creeds to explain Jesus or God or the holy spirit.

Extracted in part from Jesus is the son of God, not God the Son.