'O God' in the Bible

So the Jewish leaders were trying all the harder to kill him, because he was not only breaking the Sabbath but was also calling God his own Father, thereby making himself equal to God.

The one who belongs to God listens to the words of God. The reason you don't listen is because you don't belong to God."

The Jewish leaders summoned the man who had been blind a second time and told him, "Give glory to God! We know that this man is a sinner."

Because Jesus knew that the Father had given everything into his control, that he had come from God, and that he was returning to God,