'My Lord the King' in the Bible

Now please hear, my lord the king: please let my supplication be presented before you, that you not cause me to return to the house of Jonathan the scribe, lest I die there."

"My lord the king, these men have done evil in all that they have done to Jeremiah the prophet, whom they have cast into the dungeon; and he is likely to die in the place where he is, because of the famine; for there is no more bread in the city."