'O God' in the Bible

So God was good to the midwives, and the people multiplied and became very numerous.

After a long time, the king of Egypt died. The Israelites groaned because of their difficult labor, and they cried out; and their cry for help ascended to God because of the difficult labor.

So God heard their groaning, and He remembered His covenant with Abraham, Isaac, and Jacob.

Then Jethro, Moses’ father-in-law, brought a burnt offering and sacrifices to God, and Aaron came with all the elders of Israel to eat a meal with Moses’ father-in-law in God’s presence.

Moses went up the mountain to God, and the Lord called to him from the mountain: “This is what you must say to the house of Jacob, and explain to the Israelites: