'Overthrow' in the Bible

But the princes of the children of Ammon said to Hanun their lord, "Do you think that David honors your father, in that he has sent comforters to you? Hasn't David sent his servants to you to search the city, and to spy it out, and to overthrow it?"

Then David said to the messenger, "Thus you shall tell Joab, 'Don't let this thing displease you, for the sword devours one as well as another. Make your battle stronger against the city, and overthrow it.' Encourage him."