Oh, My God!

Hi, this is Suzune writing.....umm....typing?

〉Hi, Suzune-san.
〉This is Morin"g"(I want to add "g").

Oh, my God !
I'm so sorry.
Name is important.
When Anne called "Ann", She was very angry.
So, That's my fault.

By the way, now I wrote "Oh, my God!"
But actually I'm not so religious.
And I'm not Chiristian.
My most familliar gods are Shinto's gods.
But probably God in "Oh, my God!" is a unique creature,
and Shinto's gods are not unique ....not single, pluneral.
So I might say "On my , gods".
But That must be strange. :-)

Do people without religion usually say this phrase?
Do anyone know that?