The divine unity...is a shared essence (ousia), something no creature can attain.
I feel sorry for your Jehovah/Jesus God. He must feel like a failure over his spirit angel creation. It takes God himself to do something because he can't trust his own creation.
Your claim is that Jehovah and Jesus are one in the same, share the same essence, not being created.
You claim that your Jehovah/Jesus God created all 'angel creatures/beings' (his spirit sons) and there are many, many 'angel beings', including Satan, but they are not the same essence of God.
And you claim that your Jehovah/Jesus God created humans, Adam and Eve, (his human children/son and daughter) and they are not the same essence of God.
So, with his (God's) creations of both spirit angels and humans, Satan and other angels and Adam and Eve, failed their creator/were disobedient to him.
Then when he (God) goes about trying to remedy it and offers a ransom life, he says:
"There is not ONE angel spirit son of mine, that I created, that I am able to use as a ransom life, they would all fail me, therefore I have to use myself as my own son because the spirit angel sons that I created could never prove faithful until death as a human, not even ONE of them could."
He goes on to say:
"And then when I use myself as the ransom life, and humans believe that it took the creator himself to do it, because the angels that I created, are not good/faithful/trustworthy enough to do it, when those humans believe that, then I will grant some of them to sit down on my throne and rule with me, but I will never let even ONE of my spirit angel creations do so, NONE of them are worthy for that, even though they are my true spirit sons, I will only let my human sons rule with me."