Jesus said He has a God and as a man of course He has a God. But as I have said more than once the Bible tells us when the Father became the God of Jesus, in His mother's womb. (Psalm 22:10)
Ps 22:10 From birth I was cast on you;
from my mother’s womb you have been my God.
Jesus was not created, that is plain from many NT passages, and the one I have been going to many times is John 1:3
John 1:2 He was with God in the beginning. 3
Through Him all things were made, and without Him nothing was made that has been made. 4In Him was life, and that life was the light of men.…
This is a very plain scripture that tells us the Word was not made or brought into existence. But maybe you don't believe it.
The Word was not created and so was either born of God before time began (as one of the credos say) or was with and of course in God before time began. (and of course He was in God then because He was even in God while He was a man-----this is something the Jews wanted to kill Jesus for claiming)
And no I don't think that humans have sons within them before they are begotten in a modern materialist way, but biblically and in the spirit of the father a son exists in our ancestors.
Heb 7 …9And so to speak, Levi, who collects the tenth, paid the tenth through Abraham. 10
For when Melchizedek met Abraham, Levi was still in the loin of his ancestor.
The Father is greater because all that Jesus has comes from His Father,,,,,,,,,,,,,,,,BUT the Father is not
better. Jesus has the same nature as His Father, or the same substance if you like, the phrase the Arians did not like because they also disagreed on Jesus being the type of Son that the NT claims He is, just as also the Jews did not like the type of Son Jesus was saying He is even though they knew that the Messiah is said in the OT to be the Son of God, the heir.
And no Jesus did not claim to be a god and we know that there were no other gods formed and that were with the Father and never will be.
Isa 43:10 "You are my witnesses," says Yahweh, "With my servant whom I have chosen; that you may know and believe me, and understand that I am he. Before me there was no God formed, neither will there be after me.
That is what this verse means isn't it? Jehovah is the only God and so if Jesus was a god He was the same God, Jehovah,,,,,,,,,,,,,,,,,,,,,and of course this is what we learn in many places in the NT where OT passages about Jehovah are applied to Jesus, and where Jesus is said to have received/inherited the name above all names. (and no it does not say all "other" names.)
The Father may have greater authority than the Son and the Son may have received all things from the Father BUT they are exactly alike, no difference apart from that Father/Son relationship.