'O God' in the Bible

And they were helped against them, and the Hagrites were delivered into their hands with all that were with the Hagrites. For they cried to God in their battle, and he heard them, because they trusted to him.

And say, 'Save us o God our saviour and gather us together and deliver us from among the heathen, to thank thy holy name, and to praise thee with the praise that becometh thee.

And yet this seemed little in thine eyes O God. But that thou shouldest speak of thy servant's house for a great while to come: and hast looked upon me as upon a man of high degree, O LORD God.

Then said David to God, "I have sinned exceedingly in doing this thing. Nevertheless, yet do away the wickedness of thy servant, for I have done above measure foolishly."

And David said unto God, "Is it not I that commanded to number the people? And I am he that have sinned and done evil in deed. But what have these sheep done? Let thine hand therefore O LORD God be on me and on my father's house, and not on thy people to destroy them."

And his brethren were in men of activity, two thousand and seven hundred ancient heads, which king David made rulers over the Reubenites, Gadites and the half tribe of Manasseh in all matters pertaining to God and businesses of the king.