'Oh' in the Bible

And Abraham said unto God, Oh that Ishmael might live before thee!

And he said, Oh let not the Lord be angry, and I will speak: peradventure there shall thirty be found there. And he said, I will not do it, if I find thirty there.

And he said, Oh let not the Lord be angry, and I will speak yet but this once: peradventure ten shall be found there. And he said, I will not destroy it for the ten's sake.

And Lot said unto them, Oh, not so, my lord:

behold now, this city is near to flee unto, and it is a little one. Oh let me escape thither (is it not a little one?), and my soul shall live.

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

Then Judah came near unto him, and said, Oh, my lord, let thy servant, I pray thee, speak a word in my lord's ears, and let not thine anger burn against thy servant; for thou art even as Pharaoh.