'O God' in the Bible

But to 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 it behoved him to be made like His brothers, that He might be a merciful and faithful high priest in things pertaining to God, to make propitiation for the sins of His people.

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

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

Therefore He is able also to save to the uttermost those who come unto God by Him, since 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 I said, Lo, I come (in the volume of the Book it is written of Me) to do Your will, O God."

then He said, "Lo, I come to do Your will, O God." He takes away the first so that He may establish the second.

By faith Abel offered to 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 who comes to God must believe that He is and that He is a rewarder of those who diligently seek Him.

to the general assembly and church of the first-born who are written in Heaven, and to God the judge of all, and to the spirits of just men made perfect,

By Him, then, let us offer the sacrifice of praise to God continually, that is, the fruit of our lips, confessing His name.