'O God' in the Bible

And their complaint came up unto God from the labour. And God remembered his covenant with Abraham, Isaac and Jacob.

And Moses said unto God, "What am I, to go to Pharaoh and to bring the children of Israel out of Egypt?"

Then said Moses unto God, "When I come unto the children of Israel and say unto them, 'The God of your fathers hath sent me unto you,' and they say unto me, 'What is his name?' - What answer shall I give them?"

and said unto them, "Would to God we had died by the hand of the LORD in the land of Egypt, when we sat by the flesh pots, and ate bread our bellies' full; for ye have brought us out into this wilderness to kill this whole multitude for hunger."

And Jethro, Moses' father-in-law, offered burnt offerings and sacrifices unto God. And Aaron and all the elders of Israel came to eat bread with Moses' father-in-law before God.

But hear my voice, and I will give thee counsel, and God shall be with thee. Be thou unto the people to Godward, and bring the causes unto God,

And Moses went up unto God. And the LORD called to him out of the mountain saying, "Thus say unto the house of Jacob, and tell the children of Israel,

they make thy sons go a whoring after their gods also. Thou shalt make thee no gods of metal.