'O God' in the Bible

But unto the Son he says, Your throne, O God, is forever and ever: a scepter of righteousness is the scepter of your kingdom.

Therefore in all things he had to be made like unto his brethren, that he might be a merciful and faithful high priest in things pertaining to God, to make reconciliation for the sins of the people.

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

So God, willing more abundantly to show unto the heirs of promise the immutability of his counsel, confirmed it by an oath:

For the law made nothing perfect, but the bringing in of a better hope did; by which we draw near unto God.

Therefore he is able also to save them to the uttermost that come unto God by him, seeing he ever lives to make intercession for them.

How much more shall the blood of Christ, who through the eternal Spirit offered himself without spot to God, purge your conscience from dead works to serve the living God?

Then said I, Lo, I come (in the volume of the book it is written of me,) to do your will, O God.

Then said he, Lo, I come to do your will, O God. He takes away the first, that he may establish the second.

By faith Abel offered unto God a more excellent sacrifice than Cain, by which he obtained witness that he was righteous, God testifying of his gifts: and by it he being dead yet speaks.

But without faith it is impossible to please him: for he that comes to God must believe that he is, and that he is a rewarder of them that diligently seek him.

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

By him therefore let us offer the sacrifice of praise to God continually, that is, the fruit of our lips giving thanks to his name.