'O God' in the Bible

But regarding the Son He says: "Your throne, O God, will stand forever and ever; a righteous scepter is the scepter of His kingdom.

You loved the right and hated wrong; so God, your God, anointed you, with oil of exultation beyond all your companions."

Therefore He had to be made like His brothers, so that He could be a sympathetic High Priest, as well as a faithful one, in things relating to God, in order to atone for the people's sins.

to see how faithful He was to God who appointed Him, just as Moses was in all the house of God.

For whoever is admitted into God's rest himself has rested from his works, just as God did.

For every high priest who is taken from men is appointed to officiate on behalf of men in matters relating to God, that is, to offer gifts and sin-offerings.

for the law had never made anything perfect -- and so a better hope is brought to us, through which we have approach to God.

Therefore, because He Himself lives always to intercede for them always, He is able to save completely any and all who come to God through Him.

how much more surely will the blood of Christ, who with an eternal Spirit gave Himself a spotless offering to God, purify your consciences from works that mean mere death, to serve the ever living God?

Then I said, 'See, I have come, just as the Scripture writes about me in the book, O God, to do your will.'"

let us continue to draw near to God with sincere hearts and perfect faith; with our hearts cleansed from the sense of sin, and our bodies bathed in clean water;

By faith Abel offered a sacrifice more acceptable to God than Cain did, for by it he was approved as an upright man, since God approved him for the offering he made; and by it he still continues to speak, though dead.