'O God' in the Bible

He that doth a poor man wrong, blasphemeth his maker; but whoso hath pity of the poor, doth honour unto God.

By mercy and lovingkindness and truth [not superficial ritual] wickedness is cleansed from the heart,And by the fear of the Lord one avoids evil.

It is repulsive [to God and man] for kings to behave wickedly,For a throne is established on righteousness (right standing with God).

The sacrifice of the wicked is hateful to God; how much more when he brings it with a wicked mind?

He who turns his ear away from listening to the law [of God and man],Even his prayer is repulsive [to God].

The words of Agur, the son of Jakeh, from Massa. The man says: I am full of weariness, O God, I am full of weariness; O God, I have come to an end:

What, O my son?And what, O son of my womb?And what [shall I advise you], O son of my vows?