God said to Moses.
I am who I am.
Thus the eternal truth was given to Moses.
God just is I am who I am.

This is the proof of his existence.
There has to be a first mover.
Everything is contingent on his existence.
Because we know that everything has a mover.

God just is.
He is outside time
He neither was, nor will be , he is.
We, not him, are governed by time.

In this life we will not fathom him.
Only in the next will we know him.

……

God said to Moses
After he asked for his name
I am who I am

…….

See Exodus 3 : 13-20