'Oh' in the Bible

Abraham said to God, "Oh that Ishmael might live before you!"

He said, "Oh don't let the Lord be angry, and I will speak. What if there are thirty found there?" He said, "I will not do it, if I find thirty there."

He said, "Oh don't let the Lord be angry, and I will speak just once more. What if ten are found there?" He said, "I will not destroy it for the ten's sake."

Lot said to them, "Oh, not so, my lord.

See now, this city is near to flee to, and it is a little one. Oh let me escape there (isn't it a little one?), and my soul will live."

and said, "Oh, my lord, we indeed came down the first time to buy food.

Then Judah came near to him, and said, "Oh, my lord, please let your servant speak a word in my lord's ears, and don't let your anger burn against your servant; for you are even as Pharaoh.