'O God' in the Bible

So God created man in His own image, in the image and likeness of God He created him; male and female He created them.

And Abraham said to God, “Oh, that Ishmael [my firstborn] might live before You!”

So Abraham prayed to God, and God healed Abimelech and his wife and his maids, and they again gave birth to children,

So Rachel said, “With mighty wrestlings [in prayer to God] I have struggled with my sister and have prevailed.” So she named him Naphtali (my wrestlings).

Jacob said, “O God of my father Abraham and God of my father Isaac, the Lord, who said to me, ‘Return to your country and to your people, and I will make you prosper,’

Then God said to Jacob, “Go up to Bethel and live there, and make an altar there to God, who appeared to you [in a distinct manifestation] when you fled [years ago] from Esau your brother.”

then let us get up and go up to Bethel, and I will make an altar there to God, who answered me in the day of my distress and has been with me wherever I have gone.”

And they said to him, “We have [each] dreamed [distinct] dreams and there is no one to interpret them.” So Joseph said to them, “Do not interpretations belong to God? Please tell me [your dreams].”