[oneness]

With all due respect minorprophet this is pretty funny but an over-simplification.
In Hebrew thinking we never make G-d out to be a man, if it's one head or three.
Yahweh is an all encompassing Spirit. He is in all and by Him everything exists.
It is taught that if God even stopped thinking about you for a second you would cease to exist.
Since Yahweh is a Spirit who fills all things there can not be another diety.
Though we can not fully comprehend Him we do know that Yahshua (Jesus) is the image of the invisible G-d.
I as a Messanic Jewish believer find Great revelation in the words of our lord when He stated " If you love me keep My commandments"
So anyway even Trinitarianism is a human grasping for truth, making something so simple into a complex theology that no can understand.
Again Yahshua(Jesus) made it real simple when He was speaking to Father G-d He Proclaimed " Father, I Have Manifested Your Name" Wow Powerful truth in a few short words!.
It is so easy to see when we keep His name correct from the Hebrew scripture. YaHWeH (Father) manifested His NAME In YAHshua(Son)..No Different God, No different Name..Can't get any easer than This