'O God' in the Bible

But food does not commend us to God. For neither if we eat are we the better, nor if we do not eat are we the worse.

To those who are outside Law, I became as outside Law (not being outside law to God, but under the Law to Christ), so that I might gain those who are outside Law.

But I say that the things which the nations sacrifice, they sacrifice to demons and not to God. And I do not desire that you should have fellowship with demons.

Judge among yourselves: is it right that a woman pray to God unveiled?

For he who speaks in a tongue does not speak to men but to God. For no one hears, but in spirit he speaks mysteries.

But if there is no interpreter, let him be silent in a church; and let him speak to himself and to God.

then is the end, when He delivers the kingdom to God, even the Father; when He makes to cease all rule and all authority and power.

But thanks be to God who gives us the victory through our Lord Jesus Christ.