'Oh' in the Bible

Moreover Absalom would say, “Oh, that I were appointed judge in the land! Then every man who had a dispute could come to me and I would get justice for him.”

Mephibosheth said to the king, “Let him even take it all, since my lord the king has returned to his own house in safety and peace.”

And David had a craving and said, “Oh that someone would give me water to drink from the well of Bethlehem, which is by the gate!”