Isn't the words triune and trinity simply a way of communicating an idea? Kinda like the word Christian?
I really am having a hard time understanding if the debate is about word definitions or who God is?
Exodus 3 King James Version (KJV)
3*Now Moses kept the flock of Jethro his father in law, the priest of Midian: and he led the flock to the backside of the desert, and came to the mountain of God, even to Horeb.
2*And the angel of the Lord appeared unto him in a flame of fire out of the midst of a bush: and he looked, and, behold, the bush burned with fire, and the bush was not consumed.
In this passage we see light, sound, and substance that can be felt/heat.
We see an earthen vessel not corruptible, light not corruptible, sound not corruptible...even if it is body language at first.
Moses was drawn to such a language...and the story goes on.
If someone says that God is one...they are not lying.
If someone says that God is two...they are not lying.
If someone says that God is three...they are not lying.
Both and all are true. One plus a billion can still equal one with God.
There is no doubt that The Father, Son, and Holy Spirit all equally have no beginning or ending. We are adopted with a beginning and into no ending.