'O God' in the Bible

so as to put their gods into fire -- for they are no gods, but work of the hands of man, wood and stone -- and they destroy them.

Ye are My witnesses, an affirmation of Jehovah, And My servant whom I have chosen, So that ye know and give credence to Me, And understand that I am He, Before Me there was no God formed, And after Me there is none.

Thus said Jehovah, king of Israel, And his Redeemer, Jehovah of Hosts: 'I am the first, and I the last, And besides Me there is no God.

I am Jehovah, and there is none else, Except Me there is no God, I gird thee, and thou hast not known Me.