'King's' in the Bible

But Joab said, "May Yahweh add to the people a hundred times what they are! Are they not, O my lord the king, all of them the king's servants? Why does my lord seek this? Why would he bring guilt to Israel?"

And after Ahithophel [came] Jehoiada, the son of Benaiah, and Abiathar. And Joab [was] the commander of the king's army.