I am not arguing that God is triune. I would argue the term persons some use to describe God's triune nature is not actually in the Bible, that is just opinion only.
No it isn't.
There are different persons in the Old Testament who are God.
Sometimes they are present simultaneously.
...you're gonna ask for Bible verses...
And rightfully so, but i don't have them listed...
Unfortunately i can only refer you to lectures by Michael Heiser.
He's the expert and ancient languages buff.
And I can also provide scripture where Elohim means plural and means singular. When Jesus (I AM) was in the Burning Bush talking to Moses, in the original Hebrew, Jesus said He was the Elohim of Abraham, the Elohim of Isaac, and the Elohim of Jacob. So clearly, Elohim can be used in the singular. Because it makes no sense 3 natures of God was talking to Moses and calling themselves Elohim. We know it is Jesus because He said, I AM THAT I AM and confirmed it in the Gospel of John.
But that's how YOU see it.
I'm not saying you don't have a point at all though.
But God is One, like Jesus said, "i and the Father are One".
As far as i'm concerned, it's an unfathomable mystery who, what and how many YHWH Elohim is.
All i know is that He is the One True God, the Creator, who became flesh in Jesus Christ.
I'll go look up the lecture(s) on this topic by M. Heiser and post the link.