It's not a true story though
I was just joking. Don't tell it to anyone anymore.
The proto-Germanic word for God was ǥuđan. All the Germanic languages (English is one of them) have their roots in the proto-Germanic. So with time they developed differently so the word ǥuđan became GOD in English and Dutch, GOTT in German, GUD in Norwegian, Swedish and Danish and Guð (I guess GUD too) in Icelandic.
That's how you got the word God. It has nothing to do with the initials of Gomar Oz Dubar.