'O God' in the Bible

But toward the Son, Thy throne, O God, is into the age of the age. The scepter of thy kingdom is a scepter of straightness.

Whereupon he is able also to save to the uttermost those who come to God through him, being always alive in order to intercede on their behalf.

how much more the blood of Christ, who, through the eternal Spirit, offered himself unblemished to God, will cleanse your conscience from dead works in order to serve a living God?

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

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

By faith Abel offered to God a better sacrifice than Cain, because of which he was reported to be righteous, God testifying about his gifts, and through it, he who died still speaks.

By faith Enoch was transferred to not see death, and he was not found, because God transferred him. For before his removal he was reported to be pleasing to God.

And apart from faith it is impossible to please him. For he who comes to God must believe that he is, and becomes a rewarder of those who search for him.

to a festal gathering and assembly of firstborn sons who were enrolled in the heavens, and to God, a Judge of all, and to spirits of righteous men who were made fully perfect,

Through him therefore, let us offer up a sacrifice of praise to God continually, that is, fruit of lips acknowledging his name.