'As Your Soul Lives' in the Bible

Uriah said to David, "The ark, Israel, and Judah, are staying in tents; and my lord Joab, and the servants of my lord, are encamped in the open field. Shall I then go into my house to eat and to drink, and to lie with my wife? As you live, and as your soul lives, I will not do this thing!"

The king said, "Is the hand of Joab with you in all this?" The woman answered, "As your soul lives, my lord the king, no one can turn to the right hand or to the left from anything that my lord the king has spoken; for your servant Joab, he urged me, and he put all these words in the mouth of your handmaid;