'O God' in the Bible

And Solomon saith to God, 'Thou hast done with David my father great kindness, and hast caused me to reign in his stead.

'And, now, let not Hezekiah lift you up, nor persuade you thus, nor give credence to him, for no god of any nation and kingdom is able to deliver his people from my hand, and from the hand of my fathers: also, surely your God doth not deliver you from my hand!'