Matthew Poole and continuators on 2 Samuel 14:9

9 And the woman of Tekoah said unto the king, My lord, O king, the iniquity be on me, and on my fathers house: and the king and his throne be guiltless .

The sense is, either, first, this, If I do not inform thee aright, and thou thereby beest drawn to give an unrighteous sentence on my behalf, I am willing to bear the whole blame of it before God and Men; I acknowledge thou art wholly innocent in the case. Compare Gen. 27. 13. Or, Secondly, this, If through thy forgetfulness or neglect of this my just cause, my adversaries prevail and destroy my Son, my desire is, that God would not lay it to the Kings charge, but rather to me and mine, so the King may be exempted thereby. Whereby she both insinuates her great esteem of, and affection for the King, thereby winning upon him to compass her design; and withal implies, that such an omission of the Kings will bring guilt upon him; and yet most prudently and decently orders her Phrase so as not to seem to blame or threaten the King. Compare Exod. 5. 16. 2 Sam. 20. 16. This sense seems best to agree with David's answer, which shews that she desired some further assurance of the Kings care and justice in her concern.