'O God' in the Bible

Then Solomon said to God, “You have shown great lovingkindness and mercy to my father David, and have made me king in his place.

and he said, “O Lord, God of Israel, there is no god like You in heaven or on the earth, keeping covenant and showing mercy and lovingkindness to Your servants who walk before You [in obedience] with all their heart,

Kore the son of Imnah the Levite, keeper of the East Gate, was in charge of the voluntary offerings to God, to apportion the contributions for the Lord and the most holy things.

So now, do not let Hezekiah deceive or mislead you like this, and do not believe him, for no god of any nation or kingdom has been able to rescue his people from my hand or the hand of my fathers. How much less will your God rescue you from my hand!’”