'Oh' in the Bible

And Moses said unto Jehovah, Oh, Lord, I am not eloquent, neither heretofore, nor since thou hast spoken unto thy servant; for I am slow of speech, and of a slow tongue.

And he said, Oh, Lord, send, I pray thee, by the hand of him whom thou wilt send.

And Moses returned unto Jehovah, and said, Oh, this people have sinned a great sin, and have made them gods of gold.