'Oh' in the Bible

The one woman said, “Oh, my lord, this woman and I live in the same house; and I gave birth to a child while she was in the house.

Then the woman whose child was the living one spoke to the king, for she was deeply stirred over her son and said, “Oh, my lord, give her the living child, and by no means kill him.” But the other said, “He shall be neither mine nor yours; divide him!”