'O God' in the Bible

But I appeal to God as a witness unto my soul, that to spare you I have not yet come to Corinth:

But thanks be to God, who causeth us always to triumph in Christ, and maketh manifest the savour of his knowledge by us in every place.

For we are a sweet odour of Christ to God in those who are saved, and in those who perish.

Knowing therefore the terror of the Lord, we persuade men; but we have been made manifest to God, and I hope also have been made manifest in your consciences.

Therefore we are ambassadors for Christ, as though God exhorted you by us; we entreat you for Christ's sake, be ye reconciled to God.

But thanks be to God, who put the same solicitude for you into the heart of Titus.

being in every thing enriched unto all liberality, which [causeth] by us thanksgiving to God.

For the ministration of this [charitable] service not only abundantly supplies the deficiencies of the saints, but also overflows with many thanksgivings to God;

Thanks be to God for his inexpressible gift.

Now I pray unto God that ye do no evil, not that we should appear approved, but that you may do that which is laudable, though we should be as reprobates.