'O God' in the Bible

Therefore concerning the eating of things offered to idols, we know that an idol is nothing in the world, and that there is no God except one.

But meat will not commend us to God; neither if we eat are we the better; nor if we eat not are we the worse.

For in the law of Moses it has been written, Thou shalt not muzzle the ox that plows. Is there a care to God for oxen,

But those things which they sacrifice, they sacrifice to demons, and not to God. But I do not wish you to be the communicants of demons.

Judge ye among yourselves: is it becoming for a woman to pray to God uncovered?

For the one speaking with a tongue speaks not to men, but to God; for no one hears him; but he speaks mysteries in the spirit:

but if there may be no interpreter, let him keep silent in the church; but let him speak to himself, and to God.

And we are indeed found false witnesses of God; because we testified according to God that he raised Christ: whom he did not raise, if then the dead rise not.

then the end, when he may deliver up the kingdom to God, even the Father, when he may destroy all government, all authority and power.

But thanks be unto God, who gives us our victory through our Lord Jesus Christ.