'O God' in the Bible

And Solomon said unto God, "Thou hast showed great mercy unto David my father, and hast made me king in his stead.

and said, "LORD God of Israel there is no God like thee either in heaven or in earth, which keepest covenant and showest mercy unto thy servants that walk before thee with all their hearts.

And have ye not cast out the priests of the LORD, the sons of Aaron, and the Levites, and have made you priests like the nations of other lands? Even whosoever cometh and filleth his hand with an ox and seven rams, the same is made priest to them that are no Gods.

Wherefore now let not Hezekiah deceive you, either persuade you of this fashion, nor yet believe him. For as no god among so many nations and kingdoms, was able to rid his people out of mine hand and the hands of my fathers: even so much less shall your God keep you out of mine hand!"