'O God' in the Bible

but respecting the Son, "Thy throne, O God, is forever and ever"; and, "A scepter of uprightness is the scepter of Thy Kingdom;

Wherefore, it behooved Him in all things to be made like His brethren, that He might become a merciful and faithful High Priest in the things pertaining to God, to make propitiation for the sins of the people;

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

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

Whence also He is able to save completely those who come to God through Him, since He is ever living to intercede in their behalf.

how much more shall 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 said I, 'Lo, I come (in the volume of the book it has been written concerning Me), to do Thy will, O God.'"

By faith Abel offered to God a more excellent sacrifice than Cain, through which he received witness that he was righteous, God testifying of his gifts; and through it he, being dead, is still speaking.

By faith Enoch was translated, so as not to see death; and he was not found, because God translated him; for, it has been witnessed to him that, before his translation, he had been well-pleasing to God.

And, apart from faith, it is impossible to please Him; for he that comes to God must believe that He is, and that He becomes a rewarder to those who seek after Him.

to the general festal throng, and assembly of the first-born who are enrolled in Heaven, and to God the Judge of all, and to the spirits of righteous ones made perfect;

Through Him, therefore, let us offer up a sacrifice of praise to God continually; that is, the fruit of our lips making confession to His name.