'O God' in the Bible

It happened in the course of those many days, that the king of Egypt died, and the children of Israel sighed because of the bondage, and they cried, and their cry came up to God because of the bondage.

Now Moses was keeping the flock of Jethro, his father-in-law, the priest of Midian, and he led the flock to the back of the wilderness, and came to God's mountain, to Horeb.

Moses said to God, "Who am I, that I should go to Pharaoh, and that I should bring forth the children of Israel out of Egypt?"

Moses said to God, "Behold, when I come to the children of Israel, and tell them, 'The God of your fathers has sent me to you;' and they ask me, 'What is his name?' What should I tell them?"

Listen now to my voice. I will give you counsel, and God be with you. You represent the people before God, and bring the causes to God.

Moses went up to God, and the LORD called to him out of the mountain, saying, "This is what you shall tell the house of Jacob, and tell the children of Israel:

then his master shall bring him to God, and shall bring him to the door or to the doorpost, and his master shall bore his ear through with an awl, and he shall serve him for ever.

If the thief isn't found, then the master of the house shall come near to God, to find out if he hasn't put his hand to his neighbor's goods.

Moses rose up with Joshua, his servant, and Moses went up onto God's Mountain.