3 persons, each one is the Most High, this makes three beings, three Most Highs.
Nope.
You are looking at it wrong.
Think of it as 3 persons makes one unity, such as one family.
The three make 1 family, not 3 families.
YHWH is a triune unity of 3 persons - Father, Son, Holy Spirit.
We understand plural unities because the very first chapter of the Bible lays the foundation for the concept.
The GOD that was creating says "us" and "our", letting you know right away it is not just one person doing the creating.
Coupled with the fact that the NT tell us that the Son created, and that there was NOTHING created that was not created by Him.
And yet the OT says that GOD
alone created.
So we know without a doubt that GOD is a unity.
The first chapter also tells us that more than one single person can be called "
one" - Adam and Eve as
one flesh, not two fleshes.
That
one flesh consisted of two persons.
So the very first chapter sets the precedence for having a unity of "one" that does not consist of a single person.
We also know this from our own language.
One nation.
One committee.
One school.
etc.
All "
one" unity of more than one person.
Fits perfectly with what GOD has revealed in scripture for us.
So you can see how when we see someone start hollering that GOD is "
one" , we just throw up our hands because you really don't have a sound argument for it being one person to begin with.
In short, it's a very lame argument.