'O God' in the Bible

But of the Son he says, "Your throne, O God, is forever and ever. The scepter of uprightness is the scepter of your Kingdom.

Therefore he was obligated in all things to be made like his brothers, that he might become a merciful and faithful high priest in things pertaining to God, to make atonement for the sins of the people.

For every high priest, being taken from among men, is appointed for men in things pertaining to God, that he may offer both gifts and sacrifices for sins.

(for the law made nothing perfect), and a bringing in of a better hope, through which we draw near to God.

Therefore he is also able to save to the uttermost those who draw near to God through him, seeing that he lives forever to make intercession for them.

how much more will the blood of Christ, who through the eternal Spirit offered himself without blemish to God, cleanse your conscience from dead works to serve the living God?

Then I said, 'Behold, I have come (in the scroll of the book it is written of me) to do your will, O God.'"

By faith, Abel offered to God a more excellent sacrifice than Cain, through which he had testimony given to him that he was righteous, God testifying with respect to his gifts; and through it he, being dead, still speaks.

By faith, Enoch was taken away, so that he wouldn't see death, and he was not found, because God translated him. For he has had testimony given to him that before his translation he had been well pleasing to God.

Without faith it is impossible to be well pleasing to him, for he who comes to God must believe that he exists, and that he is a rewarder of those who seek him.

to the general assembly and assembly of the firstborn who are enrolled in heaven, to God the Judge of all, to the spirits of just men made perfect,

Through him, then, let us offer up a sacrifice of praise to God continually, that is, the fruit of lips which proclaim allegiance to his name.