'O God' in the Bible

Concerning therefore the eating of things sacrificed to idols, we know that no idol is anything in the world, and that there is no God but one.

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

to them that are without law, as without law, not being without law to God, but under law to Christ, that I might gain them that are without law.

But I say , that the things which the Gentiles sacrifice, they sacrifice to demons, and not to God: and I would not that ye should have communion with demons.

Judge ye in yourselves: is it seemly that a woman pray unto God unveiled?

For he that speaketh in a tongue speaketh not unto men, but unto God; for no man understandeth; but in the spirit he speaketh mysteries.

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

Then cometh the end, when he shall deliver up the kingdom to God, even the Father; when he shall have abolished all rule and all authority and power.

but thanks be to God, who giveth us the victory through our Lord Jesus Christ.