All of us have fathers of the flesh, except Jesus the only begotten Son of God. He had no natural, fleshly, or earthly father. God the Father was his Father, who is supernatural - Spirit not flesh. We are but adopted sons, he is the only begotten Son. Totally unique.
In 1 Tim. 2:4, Paul desires that we be saved and come to the knowledge of the truth, the truth about the Father and Son? Next verse.
For there is one God (three divine “persons” as one God? No, the one God here is God the Father, Father of the Son),
and one mediator (the Son of the Father) between God and men, the man Christ Jesus.
The one mediator is as totally unique as the one God is. Unique in that he is the only begotten Son.
No obtuse Trinity theory here, it is really very simple, there is simply just One God - the Father, and one mediator the MAN Christ Jesus. Mediating between the one God and men.
In disputes between management and a union, a mediator is usually called in. He can’t be mangagement, the union would reject him. He can’t be Union, management would reject him. He has to be absolutely unique in his mediatorship...so that he can rightly represent both sides.
We have a most serious issue between management (the one God) and men, only Jesus the one mediator can resolve the issue. Only he can represent both sides. In the one mediator there is both the one God and man, the Father in the Son. Which is why Jesus could say, “when you’ve seen me, you’ve seen the Father,” John 14:9.
In other words, you and Arius are on the same page.