'O God' in the Bible

We return thanks to God always for you all, making remembrance of you in our prayers continually;

For they themselves proclaim of us what entrance we have to you, and how ye turned to God from images to serve the living and true God;

For this also we return thanks to God continually, that, having received the word of God from our report, ye received not the word of man, but as it is truly, the word of God, which is also energetic in you the believing.

For what thankfulness can we return to God for you, for all the joy with which we rejoice for you before our God;

For if we believe that Jesus died and rose up, so also God by Jesus Christ will bring with him them having slept.